Lease guru, please chime in...

I'm not too familiar with leases. I just leased mine for $700 D/O, $248 tax incl for 36 months, 15K/yr on a white pkg 3 with just floor mats. the residual is $16380. I think i got a decent deal, but i keep seeing members here referring to cap cost, money factor, residual. but do those numbers really matter if I'm just leasing and returning in the end? for instance, if the residual was 25K for my lease, i could care less b/c i'm not gonna buy it anyway. if the interest i'm paying is $100 a month, i could care less b/c my monthly is still $248.

Am I missing something???