People have been obsessed with ending innocent life with abortion for ages. That's how it starts, this is the slippery slope rearing it's ugly head. They told you, oh there's no slippery slope, here it is. It's no fallacy.

In Europe some countries have these right to suicide laws. I have read that people feel pressured to do it. If you're old and your friend decides to do it because he's a burden, then you start to think oh I'm now being a burden.

Soon enough it's not going to be implicit, but explicit.