Most likely it is a way for your parents to try and prove you wrong, they may feel bad because they never realized who you really were and they were not able to help all of these years.
My parents used to say that it was impossible for me to "feel like"/be a girl because I always acted like a really macho guy, I told them it was just an act. Coming from an homophobic country I had to put in that act/mask and show what other people wanted to see, otherwise my life would have been totally different.
The easier way for most people is to make other people feel bad so they do not have to realize they could have made a mistake or that they could have been wrong.
Just do what you feel you want to do, and more important, always be you!!!! Do not let other people changed that!