"what if I'm wrong?"
I would say 70-80% of the time you will be wrong. Perhaps even more. While we do have cheaters on the site, especially in low pot games (<100

) it does occur far less frequently than you or probably most other players imagine.
For an idea of how frequent cheating is, scroll through the active games tab. We currently have 523 ongoing. After you're done with that, sort the section by "highest pot first" and take a look at how many cheaters are in the high pot games who are not named Sargmacher. That should be all the incentive you need to stay in games. The more you win (or draw), the more points you accrue, the better competition you're able to play.
But don't quit.