See, this makes me a little irate. You're and adult and what you want to do with your time and your money is your business and not theirs. If you complained or went on about their hobbies/interests/how they spend their money they would tell you to back off in a heartbeat. I say tell them to back off.
BTW, I see you were raised in western Maryland (and WV). I went to Frostburg State College for 1yr (67-68) before I decided I didn't want to spend another winter there and headed south to Florida to nursing school. My cousin graduated from Beall High School.