Too far in either direction is less healthy. Bars too low = crushing your tingly parts; bars too high = all your weight on your butt & spine.
The major problem with having all your weight on your butt & spine, (rather than letting your arms bear some of it) is our spines have a bunch of little sacks of silly-putty cushioning between our fearsomely jagged vertebrae bones. And those silly-putty bats can & will, pop & leak. Now consider that when you are completely upright, every bit of the shock of each bump is being absorbed by the silly-putty pillows in your spine.
What was uncomfortable about your position before?
Have you tried different saddles?
It's also a really good idea to exercise your core. (Abdominal, back & oblique muscles.) These will support your torso and relieve your spine of the pounding. And DON'T SLOUCH!