I'm sort of bored with the single player, but I keep going back to it to make money so I can buy new stuff to use during Giant Bomb Forza Race Night.

All Gold is just nuts.  Why would you even do that to yourself?  I did all the seasons, and I've probably spent like 60 or 80 hours playing the game.  All Gold would be like 300 hours.  Why would you do that?

I'm trying to get all gold, but I'm not doing it all at once.  I try to do about two weeks of in-game races every few days, and I usually let the AI handle the longer races.  At the rate I'm going, I should have all gold by about November, which is fine.  I tend to do a lot more races around the times when DLC cars are made available, as the cars are the primary reason I even play racing games.

I go back to it every now and again and do a few races...i hope yer playing with all assists off and with manual shift at least. i don't know how people can tolerate playing a sim game with all assists turned on.
 
I was mostly into the graphic design aspect of the game but thought it so cumbersome that even that dried up eventually.

I hope not, I just bought it. LOL late to the party as usual.

I'm still truckin' through looking for all golds. I'm saving the Endurance races for last though so even though I seem close, I have a loooong way to go.

I got through about 20 hours but had to return it when I exchanged my old xbox 360 for the slim. My experience can be summoned up with: At worst it was a good game to play while listening to podcasts and at best it was a great-looking, fun racer. So, no, I'm not tired of it, and I'll be picking it back up when I have the money.

Not bored with it at all. I did take a break for a while, visited other games and especially other racing games I'd put to one side, but am now back on Forza, currently level 38 in the career mode and am loving it all over again. The fact I've managed to tame my R3 Koenigsegg CC8S is making me enjoy it all the more :D