1. If you go out you could have an amazing time, but you will probably just have an OK time. If you stay in, you'll definitely have an above-average evening. It's just good math.
2. Facebook invites are a nightmare. They encroach on your quality time. Which is all the time.
3. You are up to date with every awesome series in the world, so your pop culture knowledges is on point. You haven't caught up on House of Cards yet? You should stay in more.