I've always thought that it was universally understood that PCs have vastly more problems with games than any consoles do. As others have stated, the drastic differences in hardware, and even software, configurations make it so that there are always going to be problems with someone somewhere. With consoles, the developers know what they have to work with, and it's virtually the same for each of that particular console. There was actually a thread posted a while back about something similar. I had this to say:
The crashes/bugs/glitches are often so far out of control on PC that I am often reluctant to even buy a game that I'm really interested in. I already have a couple of digital coasters that neither I nor anyone on the internet can seem to fix. This has never been an issue on any console I've ever had. I've had less than 10 crashes on my two Xbox 360s and two PS3s combined. I know there are people out there that have had more problems, but from my experience, consoles allow me to more consistently play my games without hassle. I've never had to worry about a game simply not starting or immediately crashing to desktop or having texture problems to the point where it's unplayable or having arbitrary constant lag/framerate dips due to the game not liking my hardware/software setup or any other number of things that you WILL have to deal with if you play PC primarily. If you don't have a problem having to spend your time getting a product that you bought to work, that's fine for you, but when I buy a game, I don't want to have to worry about the potential that it simply isn't going to work and that I'm going to have to sift through forums for hours, or longer, to find a solution. I value my time, and while all the things I've mentioned may not bother some people, they are a huge nuisance to me, and thankfully, one that I don't have to deal with on consoles, or at least with any of the ones I've owned.
Don't take this as being too antagonistic. If you are a PC gamer, I have nothing against you, but playing on PC isn't all rainbows and sunshine like a lot of people insist. One of my closest friends is the exact opposite of me. He primarily plays on PC, and I primarily play on console. We have no problems with each other in that respect. It's just the way we prefer to play. We both have our reasons for preferring one over the other. It's just that I haven't been told or shown anything that is going to make me switch any time soon.
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If you don't have a problem dealing the numerous issues that WILL come up with a gaming rig, then by all means, get one. In my opinion, it's not really all that worth it to make the PC your primary gaming solution. Consoles may not be perfect, but in the end, there's far less of a chance your games are going to be unplayable from the start.
As an ending note, I would just like to say that there are some people that seem to be painting the issues you're talking about with a broad brush. There are only a handful of games out there that have had problems for a considerable majority of people across the board, regardless of hardware or software. I can admit this for sure. However, there are games that are going to give YOU trouble that a lot of people may not have ever had trouble with, and a simple driver update isn't going to fix it. This has happened to me, like I said earlier. There are console games that have had problems too, but the number and severity of those problems pales in comparison to the outrageous number of games that have had issues on PC. I have a little over 100 physical games on my Xbox 360, about 30 on my PS3, and only about 8 or so on my PS4, and every single one of them worked perfectly the day I bought it. This isn't the case with my PC games, where there are still a few to this day that I can't play even though I bought them years ago.
The unfortunate problem here is that citing specific examples, which people are doing a lot of, doesn't do much. Why? Well, because someone could rattle off a dozen games that someone else has never had a problem with. Then that person could rattle off a dozen games that the first person never had a problem with. This is the issue right here. You never know when you may get a game that is going to be a pain in the ass to get to work, and that's IF you ever get it to work.
Finally, don't let all this make you think that I hate PC gaming (or PC gamers, because I know there are some out there that are going to take this personally). I don't. I have a decent PC, and overall, it's worked fairly well, but no matter what the circumstances may be, having even a single digital coaster in your library is going to drive you crazy. If I could only choose either my consoles or my PC for gaming, I would go with my consoles without a second of hesitation. Just think about it before you regret spending the money.
To anyone reading this, please don't come in here hammering me with hatred just because you think your PC master race was insulted. There are problems with PC gaming. Deal with it. Just like I've dealt with any problems with console gaming. Everybody has a preference and reasons for liking one over the other.