It's more of a personal preference and understanding. It's difficult to answer this question in a way, lol. I'm not quite sure how you want me to phrase the answer, there are so many variables.
and I'm assuming that you meant "Is it a bad thing to have <big> boobs".
That's the question i'm going to answer.
SO, In my personal preference, I'm not that big of a fan of larger breasts, but like i said before, it's a personal preference.
There are negatives to having large breasts though, such that they will cause more pack pain, given that you have more weight on your chest all the time which doesn't help your lower back any. They may get in the way of simple tasks (depending on the size of course....) and they do attract a lot of attention.
There isn't really anything "bad" about having large breasts because that's who you are. Though there are limits to this, being that there is a reason for breast reduction surgery.
But, there are always two sides to this. Some men like larger breasts, and some women like to have large breasts for attention from guys. There are a lot of different reasons for different sizes.
But you should let it get to you too much, I can understand how you want to put out a good public figure and having the "popular" girls mark you as something they find in disgust is a little discouraging. But don't let it get you down, try to be the person you want to be and don't let things such as this effect how you act. I'm trying to say what I'm thinking but it's not translating well, lol.
Anyway, I hope this helps at least a little bit. Best of luck to you :).