I prefer eyeglasses. However, I find contact lenses convenient and flexible (pun unintended). I can move about and do things without much worry with contact lenses on, but not so much with eyeglasses.

On the other hand, it's easy to fall asleep with contact lenses on, which is a dangerous thing. There's also the risk of contact lenses doing damage to one's eye, such as through unclean hands handling contact lenses, improper cleaning, leaving contact lenses on for too long, or dust particles getting stuck between the contact lens and one's cornea.

Eyeglasses might not be as convenient as contact lenses, but it's a lot safer. It's also a good backup when one can't use contact lenses for some reason.