I feel like I'm the only person who has never had a problem with the Canon lens caps. Even when putting them on something like a 70-200 F/2.8 with the hood mounted, I've never had a problem doing so.I have not had a problem either... So I guess we're both weird
I have a tamron lens, and I do use the pinch feature of the lens cap but that sometimes results in the cap slipping out of my fingers and hitting the front element...
Hmm, I guess I'm just weird.