Mahdi,
best of luck to you. This sounds like a classic "the grass is greener on the other side" scenario.
I sincerely hope it will turn out that way for you.
Something must have seriously upset you, you sound so angry.
Moving on in this case is definitely the best option, for you and also for those who choose to stay. Nobody likes to hear negative comments and unconstructive criticism. I guess complaining is human nature and a favourite sport in this industry, but it is also draining to the poor souls who are at the receiving end.
Have some mercy.
Congratulations on your making a choice to change what no longer suits you.