I'll absolutely look up puzzle solutions without reservations or guilt. I just don't have the patience to bang my head against something that I can't figure out after 15 minutes or so. I always start out with the best intentions, telling myself that this time I'll play it honest and won't look up any answers, but I always reach that breaking point where I'm not having fun and I know that if I turn the game off without moving past the puzzle I'm stuck on, I'll never turn it back on. The second it's no longer fun I'm off to Google.
All that said, I tend to avoid puzzle games these days. I know that either I'm entirely too stupid for them or they just aren't my cup of tea. Probably a bit of both. Even though I loved Portal and Portal 2 - and didn't look up solutions for either of those - I only enjoyed, at best, the first half to third of Braid and Fez. So I'm not even going to bother downloading The Witness. Even though I recognize puzzle games can be good exercise for my brain, I mostly want to play games to have fun and unwind, not mentally dickpunch myself for hours on end.