Never purchased an item with bitcoin but have converted my bitcoin to USDT at multiple times and when bitcoin goes up again, the thought of regret always comes in which gives an impression that not selling would have been the best thing to do. Same way earlier investors that spent their bitcoin on personal needs or converted it to a more inferior thing, looking at the prospect of bitcoin and going on to spend it somehow looks unwise.

Even though BTC is a currency but it's not at the level where you can just spend it like the way you spend your fiat. If you're interested in using yours then you can do so but the narrative has shifted a lot to using bitcoin as an asset and not just a currency.