nor understand the fact that F2P games really aren't free.
ack-ack
A good F2P can be played for free, but they normally require HUGE amounts of time to be sunk into them to reach the top. Paying money gives a boost to gaining levels and cosmetic Items.
Bad F2Ps require money to win/finish. Or the restrictions are so bad for non paying customers that it becomes only 2 options, quit or pay. Looking at you Star Trek: Trexels (iOS)

Planetside 2 Had a F2P system that was ok, but the grind was too skewed towards forcing payments out of players. I played a solid amount of Planetside and even after I had unlocked a few items it still felt like they were hunting my wallet. From my understanding they have wound that back.
World of Tanks has IMO a very good F2P model. There are only 3 consumables and a few tanks that require gold. the rest can be payed for with in game money. It used to be a case of gold ammo could only be payed for with real money but they have changed that now, and most people run with a few shells of gold ammo payed for with in game money.
Good F2P titles as a general rule of thumb are built from the start to be F2P. Converting a older game to F2P can be problematic at best.