"I don't like using "spawn-protection" killstreaks like RC-XD, Predator Missiles, Smartbombs, AGM Reapers, and AC130s because I feel that hiding behind spawn protection other than when you first spawn after death is cheap."
Buut:
The Stealth perk is vital for running and gunning. It protects you from showing up on radar (UAV), Sentry Guns (unless you shoot an unsilenced weapon within the Sentry's range), helicopters, you don't trip claymores or bouncing betties, and you are not targeted with a red square by Predator missiles or other aerial killstreaks.
Sort of like a perpetual spawn protection from many layers of threats; not even short-lived like 5 seconds of spawn protection after returning from a killstreak reward you so disdain.
Are you genuinely lacking insight into the contradictory nature of your preferences contrasted with those of other players, or are you being purposely disingenuous?
You're saying you don't like 5 seconds of post-kilstreak invisibility, but you DO like continuous invisibility & protection from UAV's, Sentry Guns, Helicopters, Claymores, Bouncing Betties, Predator Missiles & other aerial killstreaks.
Sounds equitable. =)
Personally, I don't like people that use tubes, grenade launchers, rifles, pistols, nades, betties, clays, knives, slingshots, sticks, rocks or even shoot me a sideways glance. They're ALL chumps.