Man, you guys are all buzzkills.
Stretch is like a properly edging dom: The idea isn't to get you to climax as soon as possible--it's to keep you right on the edge of getting it, teasing you and tantalizing you with getting close, each iota closer making you enjoy it that much more, and clamoring for her touch.
Just because the next thing won't bring you to completion doesn't mean you shouldn't enjoy what you've been given.