Me neither. But I believe carrying an inventory is a waste. Every item not sold just increases the value of the other items, but it doesn’t increase the selling price of it. If I make one of everything, that’s completely acceptable. Every item created thereafter, is an item sold. Virtually no waste.
I’d love to do on-the-fly customization. But thinking of what’s involved with that means wasting more man-hours. I, for example, can’t be showing products, talking to people, selling them things, while also designing, engraving, weeding, and any additional finishing required… So at least 1 more people is needed at all times. Whereas if I separate those things, one person can do it all.