I cant eat celery unless its cooked into a meat or veg dish. I know its good for me, but yeeeuk!!! As for cucumber, mostly I hate it, it seems to taste metallic, yet sometimes it goes with other things perfectly. I am lucky that I have a husband that eats all salad ingredients, so its always there if I need it and rarely goes squishy.
BUT on the subject of squish. I do reduce things to squish sometimes and I think a squishy carrot has to be the worst, though if anyone mentions squishy potatoes, I will have to agree they are also VILE.