I think there's a pretty solid case for that being a non-optimal solution, even if you've bought all their other premises. (There's not enough of them for a single or even mass suicides to inspire other people to do so, and then they'd just lose the longterm memetic war)
then they'd just lose the longterm memetic war
I am quite confident of this result, anyway. Actually, I don't see any chances for a memetic war at all, never mind long-term X-)
I'm currently unconvinced either way on this matter. However, enough arguments have been raised that I think this is worth the time of every reader to think a good deal about.
http://nothingismere.com/2014/11/12/inhuman-altruism-inferential-gap-or-motivational-gap/