Interesting thread.
But all in all, after reading all the comments on here, the best advice is to be true to yourself. What do you want? Figure that out and work towards that goal.
If you really love your wife and you desire her sexually, you have to work towards achieving the same from her. If that is not possible, then you have to decide whether or not you want to spend the rest of your life in a sexless marriage or not. (Off-hand, I would say that the answer to that is no.) So then you have to decide whether or not you want out, or to stay in but find release in escorts.
I've had quite a few serious relationships over the years and I've stuck it out when I should have bailed out. The one thing I've learned from that is that a relationship that has gone off the rails seldom can be put back on the rails. In fact, in my experience, it can never be fixed (and not for the lack of trying on my part). Once a woman goes cold on you, she's cold for good. So to be honest with you - what you see is what you're going to get for the rest of your life. So if you can't accept that, then get the hell out now, or just see escorts and if you get caught - you get caught. Big deal. She's the one who drove you to it. It's not like you were getting boned every night and it wasn't enough, it's a case of NO SEX. That's not a marriage, that's room-mates.
If it means anything to you, I know lots of guys in your situation. Once the mothering gene turns on, the sex gene turns off (permanently). With many women, their goal in life is to have kids and to be a "good mother". Sex? Sex was just a tool to get her to motherhood - to catch a man, then to get pregnant. A husband is just a means to an end; little more than an acceptable sperm donor and a revenue source to enable her to raise her brood.
As to the question of Escorts though, you will get to blow your load, you will get a sexual release, but seldom will you find intimacy. (Hence the elusive search for the True GFE.) So escorts will only take you so far. (Then again, you don't really say whether it's just sex that's missing from your relationship, or intimacy AND sex.)