There are plenty of bunkers that you can putt out of, but just like any other bunker, that does not mean it's a cinch to pull off.
In a college tournament at Taconic (Mass.) I was in the left bunker on the 9th hole with a downhill lie to a front left pin - literally an impossible shot for anyone short of Eldrick to get close (because anything blast-oriented would come out low and hot...the sand was fluffy)
I putted it, it hopped over the lip, trickled through the rough, and tumbled to about 6 feet, and I made the putt.
Still, it did not defeat the purpose of the hazard because A- I still had to make a 6 footer to save par, B- I really had to think about it....it was not the immediately evident play, and I watched others in a similar position blast with varying levels of failure over the years, and C- It was still incredibly risky, especially not having ever practiced the shot in that location - catch it a little fat, leave it in. Dont hit it hard enough, it catches in the rough...or maybe sticks on the lip.
Should it always be an option? No...but if it is an option, It's fine by me.