I do agree it's a good choice to have. Would we be given that choice though? I could be stricken with an incredibly painful disease tomorrow and have zero quality of life - and even if I wanted to die (and couldn't do it myself) nobody would be allowed to help. Now we're talking about a perfectly healthy person wanting to die. There's also your question of responsibility to others (young children for example) and whether or not you're making a rational decision or one clouded by temporary mental illness. Society will need to change massively before we have the choice to die when we want (assuming eternal life).