I honestly support it. The only part I don't like is financial gain from it, but if it was one of many services hospitals provided, much like how veterinary clinics will put your pet down to stop its suffering, it'd be perfect. I don't see any reason why a person should be forced to live. When I hear the argument that it's selfish to want to end your life, I think it's just as selfish to want someone to stay alive who is miserable simply because *you* would be sad.
There are important things to consider, though. It'd be of utmost importance to regulate it and make sure it could never be used for the wrong reasons, or put someone out who didn't truly want it.