I don't feel like we should rely on Batman exclusively as our home defense strategy. I imagine the dude's pretty busy doing his own thing most of the time, and he's not omniscient either.
Escape and evasion shouldn't be shelved though, because running away keeps our identity intact, but at the same time I think I'd rather some gadgets laying around just in case. Plus, having some equipment stashed at home means we wouldn't lose everything if our base of operations is compromised for whatever reason.