I use loops constantly. Although I've been playing guitar for over 40 years there are much better players than me out there, and of course all sorts of other instruments I don't play. Loops have opened up a whole new world and allowed me to produce professional sounding tracks relatively quickly. The thought that I should close off those possibilities because of some misguided notion (in actual fact, an ego trip) that using loops makes me less of a musician is just ridiculous. I have no qualms about using every tool available to me.