When I put a paracetemol suppository up dd's bum, I didn't shove my finger up her bum too. Ouch! Surely if you're shoving your finger up someone's bum you're doing something wrong!
Suppositories are pretty common for adults. What about piles pills? Medication for Crohns and colitis is through the bum sometimes too.
I think they make life so much easier, and if you're doing it right, the child will hardly notice.
Can you get suppository paracetemol in UK? I bought mine in Germany.