Started in R/C 32 years ago - left the hobby and returned 3x. Girls, firearms, girls, a full-scale Cessna 210RT, girls, horses, cowgirls, women, marriage, divorce, more women, marriage w/kids (kept this one - 17 years on Saturday!) and now Harleys, all distract from my lifelong interest in R/C. Now that I'm established in my life, I still have other interests that sometimes keep me away from R/C for a time, but I don't sell off my stuff only to later replace it at higher cost. I kept a 13' glider in my dorm room at college, had a spare bedroom dedicated to building in several apartments, and now have a 16x35' shop attached to my house - designed the house with the shop integral, built it all in one shot. My hobby has even provided me with gainful employment over the course of seven summers, teaching groups of disadvantaged youth to design and build R/C planes.
If you have a decent radio, motor and some sort of airframe, you can fly a whole lot cheaper than dinner and a movie. It helps to stay balanced - fly some, study some, chase some. If you fly too much, your grades will suffer. If you study too much, you will burn out and become ineffective and unhappy. If you chase too many girls, you'll forget to fly, study, eat.....