The Universe has been evolving from it's very first moments so it is not too surprising that we, products of that same Universe, would evolve also. For me, I've continually messed with my fit for 24,000 miles and, by golly, I seem to have arrived at a place where fit is perfect or near perfect. It is lower and longer than I have tried in the past. I think it is perfect because it is comfortable and I just about don't need cycling gloves to deal with hand discomfort. Equally at play it the fact that I exercise regularly and most recently I've been strengthening back muscles so there is less weight on the hands. To sum up, the best fit is a matter of more than a single avenue of approach. For yourself, I would suggest you continue messing with fit and get that core up to strength.