Ultimately, when it comes to business, one of the biggest reasons to spend money is to buy yourself time. You probably could build an entire product yourself, but if you hired a few developers at $100K/year, you could build the product way faster. If you had new systems at $3K each (instead of buying used laptops from five years ago for $99 each), development would speed up. If you spent $2K/year on a third-party software suite, you wouldn't need to build it yourself or mess around with something not quite so polished. The flip side is that if spending money on something doesn't get you any benefit then of course you shouldn't do it.

Some people see benefits, and some don't. But making comparisons to narcotics comes across as quite childish.