Feel guilty about parents spending money for me?

Remind yourself that this is your parents treating YOU. Sure it is something you are interested in as while, but it doesn't sound like they were really hesitant. Also it sounds like your family knows how to manage money. You may not take many trips, but you have a sister attending college as well as yourself and they can still have recreational things? Cool! Children are expensive, your parents know that. Just make sure you work hard in college and always show how thankful you are and you won't be guilty. You can always show them how much you love them by giving the, gifts and calling them to keep in touch.