Well said. Many people have said to me. "I'm not a professional- I just make things to finance more tools and leather." When a customer comes into the shop and wants a $100 item for $15 because that's what it costs at the Mart of Wal, well, drive down and get one. If I went to rdb's shop and said, "I want a holster to match my other gear, with a certain cant, an extra feature or two, and my name in neon." I'd get it. You can't get custom work from mass manufacturers, which is why some of us can still pay the bills on Friday.
If you want to take this up as a hobby, nah, it ain't cheap. It is satisfying and productive, and it feels good to combine function and form, like woodworking. If you want to be a professional, you have to work twice as hard at sales as the plumber or the electrician because the customer can go buy a nylon cheapie mass-produced boring item at a fraction of the cost, and the house isn't flooding or dark, so the customers are not as desperate.
I encourage you to explore leatherworking. You have a start on tools, and an interest, and you always have us if you have a question. We're the unofficial "leatherworkers support group", all bitten by the leather bug, and we have meetings every night in the chat room. We know we're addicted, so we just try to help each other improve our work. When we figure out how to save money at it, we get all excited. Click the retailer ads at the top of the page to get more info. They are known for working with their customers above and beyond the call of duty.
When you start making things that please you, you'll be hooked. But don't worry, you're in a good crowd.
Johanna