Don't be so quick to judge the fitters. There are many, many ways to get fit to a bike, and if you only get fit once then you have not gotten a complete fitting. You have to get fit, ride a while, then go back for adjustments. Maybe the OP hasn't gotten any adjustments.

For example, let's say the fitter assumed the OP was a little out of shape and the fit ended up being not too aggressive. (@lechwe: it would help us a lot if you could get someone to take a photo of you on your bike and post it here.) That's only one way to fit someone. It could be a nearly "perfect" fit going by measurements and calculations, but maybe the rider was not sitting on the bike when stationary the same way he ended up riding on it--so when the rider gets out and rides he must return feedback to the fitter to make adjustments. Heck just the thighs moving up and down under a sagging beer gut could be making the rider want to sit more upright or closer to the bars and that might not have been considered at the fitting. Hands going numb could be because the seat is too high, too far forward, angled down too much...could be the bars have too much reach/drop...stem is too long, stem is angled down instead of up, not enough risers for the stem, stem angle is too shallow...there are lots of adjustments, small and large, that could be made to help get some weight off the hands and/or get the elbows bent more, etc.