He'd rather people suffer so he could feel better about himself. Personally, I'm pro-euthanasia for selfish reasons too - I'd like to be able to end it cleanly, alternative ways are a mess.
You can't fix everything. Drugs don't fix everything. Not everything can be treated. Seen too many people slowly detoriating, waiting to die for incurrable diseases.
If I have a right to live, I should have a right to die, otherwise I'm a slave.