I won a key game in high school where i was down a clean pawn in a rook endgame after i blundered badly. I called touch move, and he was forced to take another pawn, but i back ranked mated him. We won the team match, i feel no regrets winning because the team needed the win. The OP has issues if they have problems of winning unorthodoxly. winning on time, when down lots of material applies to this too.
I have problems with the touch move rule because I have had too many instances where right after I moved, I realized that the move I made was a complete blunder. Being down lots of material does not apply because you won the game because you outplayed your opponent. Winning by touch move means that you probably did not outplay your opponenet and you won by luck. The same goes for losing by touch move. I think that the game would be much more fun to play if the touch move rule did not exist.
A master explained it to me ages ago: If you're serious about playing chess, you play with your brain, and then grab the piece and move it.