I thought too that I should avoid spending too much time on moves when I can easily win.
But practice has shown me that, when I feel that a fast way to win is in the air (such intuition comes with experience), I should spend a few more seconds (or minutes OTB) and try to find it instead of grabbing or exchanging material thoughtlessly. It would save more time in the long run than the time I spend on seeking a forced win.
E.g. in the above game, I could have finished the opponent off at move 26 instead of 37. As played, I spent time and energy on 11 more moves instead of taking merely twice-thrice more time than usual on move 24.
Good blitz players are good because they know which positions deserve a longer thought and which are no-brainers. (Tbh, the 24... Rg1+ from my game should be a no-brainer for a truly competent blitz player.)
You mistake me: my frustration stemmed exactly from that I don't like spending any time on the position at all. As for allowing seeing farther somehow in more competitive positions, I beg to differ or would at least qualify that. What am I supposed to learn from the last game? Wait, he was trying to teach me a lesson? I don't get what the argument is at all there, but not because we agree that time. We could probably leave it at that.