Is it selfish to commit suicide when you know that the person who is going to find you will be one of your kids?

A friend committed suicide last Monday. There is some speculation on his ex-wife’s part that he probably used injection or pills, rather than one of his many guns, because he knew he was going to be found by his 17 year old daughter. The implication is that he was trying to spare her in some way, but I say why the hell not drive out to a lake somewhere and let some stranger find you instead?