The courts have long held that part of a healthy democracy and holding politicians accountable includes sharing of matters of interest to the public. I would say Trump, as a POTUS and candidate, falls under that umbrella as a public figure. If his tax returns show nothing nefarious, then he can laugh and say he told us so. If they show he falsified the returns in any way, then he needs to be held accountable.
You may not agree that its not right to release them and that Trump is owed some privacy but the courts have spoken and laws have been broken. Sorry that your feelings are hurt.