Yep, if we have no incentive to look forward to another day and make ourselves better human beings, lets just go out and start killing people for the hell of it. Rape a few hot ass women and get drunk. Hell while we are at it, lets rob a few banks and get a few million to go party on. After all, we are toast anyway aren't we? Why fear anything?
I don't take walks on a leash, I don't need a cookie when I take a shit, and I certainly don't need to be reminded of the difference is between right and wrong. Some people do apparently, hence the 20 different religions out there. I'll stick to what we can prove and what else we can learn about how we really got here. That's incentive enough for me.