The only thing that has stopped you getting your PPL is you! We all know a poor workman blames his tools ... Is that you?
Cessnas aren't sexy, but they're fine for teaching you the bits your gliding hasn't. You already have stick and rudder skills, so as it's not handling that you need, why worry what you fly? All you'll really be "learning" for your PPL is engine management, instrument appreciation and more navigation. You an do this in anything, so put your predudice aside and get yer bum in anything you can. Plenty of time for fun aircraft later.
Probably the best route for you would be NPPL SLMG, then convert to SEP and if you feel the need PPL.
SS