Why do feminists think how one feels about something should override the truth of the matter?

These days, truth has been replaced by feelings. Truth isn't determined by facts, but by opinions and emotions. Do you feel like you're really the opposite gender? Then you are, even if biologically you are not. Do you feel that something's right, even if it's obviously a bad idea and will only cause trouble? Then it's right. I guess it's just easier for people to go through life guided by their emotions than it is to face cold, hard truth and realize that you aren't perfect and can't always have whatever you want, and that some things you do/want are bad.