Why?

ok, so for the past few months, i've been attending a different church than my mom and dad. My mom's entire side of the family (aunts, uncles, cousin, grandparents), except for my parents and my grandmother, go out to Kurten for church. Since i don't really like the youth group at Grace (the church my parents go to), i go out to Zion for church and youth group. I've also become active in the bell and vocal choirs. I love it out there, because the church is so small that everyone knows everyone else, and there's a lot of unity in the church. Well, my dad HATES that i go out there. Is it right that my dad not like that i go to church? even if it is without them (and he doesn't even go half the time anyway), at least i'm going to church right? Why is it that anytime my mom asks me about something in Kurten or something that's going on at the church that my dad yells at me for my answer, even when it's in a public place (like a restaurant, for example). I used to get along with my dad really well, and i was a complete daddy's girl, but since the whole cancer issue, he hasn't been the same, and that's completely understandable, bc it's a traumatic thing, but why does he have to act like he hates me now? Everything i do outside of "the family" i get yelled at for. Whether it's me staying late at school for my club meetings, or if it's me going to kurten for rehearsals, church, or youth, or even just having friends over to hangout and watch movies or something (even when he's at work, and it's just my mom and i at home), i get yelled at. I don't understand how trying to help the community, my school, or my spiritual life should get me in trouble. My mom is fine with me doing all these things, and actually encourages them, but my dad can't be happy for me. Why is it so hard for me to have a good relationship with my dad now? When my sister was in high school, they didn't get along either, and even while she was in college they didn't really get along all that well, but now that she's moved away, he's always saying how he wishes she would come home and visit or call and talk to him on the phone. It's as if we've switched places. Nothing i ever do is good enough for my dad unless i'm following in his footsteps or doing something for him. He's never been happy that i want to go to culinary school, not just because it's far away, but because it's not a "real career". I still get a bachelor's degree, and i still go to college for 4 years... what about that makes it not a "real career"? i just don't understand.