I know it's difficult, but it's best to ignore other people's opinions! Whatever makes you happy is best, and luckily there is a big old world full of all different kinds of people...you will find the ones who get you!
Sometimes families and friends just need the time to adjust. I am personally straight, but my sister-in-law got her first girlfriend a few years ago, and the whole family was iffy about it. Fast forward a few years, and they are married, and both of them are completely part of the family. It helped a lot that we both totally love the new girl. It was hard even for the most conservative grandmas to deny how happy they are together, and how healthy their relationship is. People who love you will be happy for you once they see it's a good situation for you!