Because everyone (for certain values of everyone) has a niche issue that current software doesn't address or addresses poorly, or they just don't want to pay fo

Because everyone (for certain values of everyone) has a niche issue that current software doesn't address or addresses poorly, or they just don't want to pay for something that the government should provide. It's their damn tax code, the least they could do is make it as simple as possible to PAY THEM MONEY.