I'm not entirely sure the degree gives you any advantage in the airline world - unless perhaps management positions are where you want to go after the flight deck and even then....
What a degree does give you is a useful tool outside of the airline world (which can be a volatile place in terms of job prospects). On that basis make sure your degree is something you enjoy and is likely to help you find a position outside the industry.
The Uni Vs. "Training now" argument has been done ad nauseam on this website - give the thread a read if you feel like it, but remember, ultimately you don't need a degree to fly but you may need it to earn the money to learn to fly, however your route is your choice....... there's more money in plumbing these days than having a degree in something just for the sake of it anyway.
Edited to add - University is also great fun and provides some "life experience" (though I hesitate at calling uni life real life!) and if you feel you want to go, you definitely should - just make it worthwhile!