I don't mind the backing as much since I started tearing my fabric rather than cutting it for the one big long seam. I hated trying to wrestle that much fabric to get it flat and narrow enough by folding it to use my rotary cutter or mark it using scissors. One measurement, one snip on the selvedge and tear it across. I haven't pieced backings yet. Will have to try that sometime.
I used to hate sandwiching too before I started to glue baste because it was so hard not to get wrinkles in the backing. Now I put the bat down first which is less slippery and put the glue on that and then put the backing on top of that spreading it smooth with my hands. No wrinkles and much easier to position.