Is it normal to feel bad about what you want when you tell it to others?

Your opinions are just as valid as anyone else's.

If you change them to suit others, you might feel more comfortable momentarily. But eventually, people will start to doubt your authenticity.
So it's actually much better to learn to be ok with those little disagreements. If someone says you're lame for liking something, learn to laugh about it. Because at least then, you'll be representing a more solid version of yourself and people will ultimately respect that.

I can't say I never used to act similarly. But it gets better with age. In my case it became the opposite. Now I enjoy and prefer difference in opinions/tastes way more than placating. I actually get a kick/laugh out of people saying "omg how can you like X it's so shit!" It doesn't change what I like, though that is largely because chances are I musta said the same about a liking of theirs first :b

It's gotten to the point that when I meet someone new, while they are obsessed with finding commonalities, I am looking for their... courage (?) in sticking to their guns i.e. individuality. My reasoning is, imagine how much drama you might have down the road if the person you intend to date/befriend is ruffled or muffled by a difference in opinion/interest.

Sometimes it's good to be influenced and feel bad. Eg. I have a bad habit of rewatching a TV series all over again instead of starting something new. So someone saying "wtf is wrong with you X isn't even that great" helps me start a new series. And it's never a decision I regret.

It will go away, I assure you, even if gradually. You have the will to get over it which is a good start.

Just because you want to be liked and approved of doesn't mean you should sacrifice your opinions.

I used to do the same thing, and I'd feel bad about liking popular music like Maroon 5 and Katy Perry when my SO was into obscure punk genres I'd never heard of. Eventually, you have to realize that it doesn't matter if they don't like Maroon 5. It's not like you're going to force them to listen to music they don't enjoy, and they shouldn't do the same to you either with music, movies, clothes, or whatever.

When they say "Eh, The Matrix wasn't that great," you can just say, "Well, I really enjoyed it." What are they gonna say back? That you should have hated the movie and been miserable because your tastes don't exactly align with their own? If they go on to criticize it (most won't), that person isn't worth keeping around since they obviously aren't wise enough to not to bash something you enjoy and hurt your feelings.

Its stupid to feel bad about anything. Stop following others.
Now that I have told you what to do, you can fix the problem.

Why in the world would you allow you bf (or anyone else) to influence you that way? That's so sad.
You are entitled to like what you like and nobody has any right to tell you that you are wrong about it. Be stronger than that. If your guy doesn't like you being a strong, principled gal, then he's the loser, not you.

Grow a pair and stop being a pussy.No one likes that.Cher'