Basically it's a choice between less maintenance and more maintenance. Glasses, by default, require less maintenance then contact lenses since they don't directly contact the cornea of your eyes, unlike contact lenses.
If you don't like how you look in glasses you shouldn't just jump to contacts straight off. Some people's eyes get irritated more easily, so if you can, check with your doctor. He'll be able to best guide you on your choice.
Even with that in mind, modern contact lenses, if properly maintained, are not likely to cause you any problems, but be careful nonetheless.