I DON'T REMEMBER THIS THREAD. but i'll reply anyway
For sleeping: If you keep things simple and use health for it, maybe rest is the only (good, reliable) way to heal
For going out: Don't Starve (which is very effective at creating a feeling of a comforting "home") forces you to get away from your base by having resources that take time to regenerate or just never return, most notably food, which you need to actively care about or you lose. If you hate hunger bars you can make the defenses take resources to repair, or need ammunition or something.
That does beg the question: what happens if you're just that cracked at the game and never go home. is there something that makes it impossible (eg you're protecting a thing, or indeed you can't heal otherwise), or is it guaranteed to be too hard? That could dismantle the entire thing if the point is the house