Lots and lots! I'd be a millionaire if there wasn't.
One thing I really don't understand, and I guess it's just a microstakes cash game thing. Players going all in for 100+ BBs in unopened pots when only the 1.5 blinds are in the pot. Or jamming for 100+ all in to a single standard raise when there's 4.5 BBs up for grabs. Who's calling that? Well sometimes they actually do, lol, but why don't they realise how much value they're missing out on because nearly always everyone folds.
Do they not actually want to play poker?
I'm sitting there with something AJ or KQ on the button, thinking this is a playable hand when someone acting ahead of me just goes all in with nothing in the pot besides the blinds. Easy fold! If they have AA, KK, QQ, JJ, 10 10, 99, 88 AK, AQ etc. and played normally they could have easily won some money from me. Weird.
If you want 1.5 BBs that much you can have them!