At what point do you look inward for someone to blame for your circumstances?
You can renounce a citizenship. They added an exit-fee recently. Plus if you've been living in the US working for a US company you've been paying taxes, no?
Or else you're under the table and not paying taxes, in which case this is all moot.
2. The US does not collect, if you don't want to come back to the US it doesn't matter.
First world children accidentally having US citizenship from their parents youthful indiscretions aren't so happy this decade with their inability to use normal financial services in their own country.
There's the possibility that the US gets sidelined in global finance but otherwise there's no reason to assume it won't continue with its current momentum instead of recently developed progressions somehow being steady state.
Going to the US as some kind of fun few year adventure is really no longer something someone should contemplate without first consulting non existent neutral international financial/immigration/legal council. If you aren't sure of a very specific goal/desire consider if somewhere else might work well enough instead.
Worst case you can always go back to whatever country you're a citizen on, go on welfare and start over from scratch.