Hi Sonia, I'd just ignore people like that. If they don't like astronomy, that's too bad for them.
When you are looking up and exploring the night sky, all you are doing is having a look at where you live. It's natural human curiosity. I find that a lot of people are fascinated and very grateful when I show them something spectacular (e.g., Saturn, Jupiter, Omega cent).
It's just a sign of immaturity that your friends pick on you for not being a conformist drone. Pay no attention to them. I bet they still want to look through your telescope, right?
