Future in laws 😣😣

So, my in laws are pretty much a nightmare. They are terrible. They have hated me from the start and never given me a chance. They are constantly trying to convince him to not marry me and to end the wedding which is in just over a month. I told my fiancé I'm not comfortable taking his last name becauese I just don't feel comfortable having the last name of a family who hates me wants nothing to do with me and tries to talk him out of marrying me....am I wrong for wanting to keep my last name that I've had since I was adopted 10 years ago or should I just suck it up?