I found it useful and worth it, especially as I couldn't really wear contacts without my eyes getting really dry and irratated very quickly, and in my work, eyeglasses were a pain, especially as I worked in labs and had to wear goggles a lot.
If you're thinking about it Odin, go see your GP or family doctor, talk to them and see if they can refer you to a specialist. They can run you through the procedure (its not exactly for the squimish), and will give you some instructions if you wear contacts before the procedure. Once its done, they give you some antibiotic eye drops which you'll have to use a couple of times a day for a few weeks, and you'll be given some goggles to wear when you sleep. Just follow the instructions and you'll be fine. You'll probably want to stay in darkened rooms for a few days afterwards.
Overall, you're in there for a couple of hours for the procedure, I went in in the morning, and I was out in the middle of the afternoon. You might feel some discomfort during the procedure, but its a small price to pay to be free of glasses....On top of the fee to have it done, which for me, was about €1200 for both eyes.
A word of warning though, the white of your eyes will look bloody for at least a couple of weeks, thats normal, but it might freak people out. My girlfriend almost screamed when I got back from the checkup and took off the sunglasses.