Learning to sew like an expert takes a lot of time. It's a skill that requires a lot of patience and meticulous attention to detail.

But, learning to make stuff for yourself with a sewing machine does not really require the same level of perfection as if you were selling it.

I bought an old (antique) Singer sewing machine for less than $100 on eBay to make harnesses for my burros. The stitches I made are not perfectly straight, but they are strong and the end result worked very good. I also made some gas tank covers for my boat, and sewed up some seams in some old clothes I have, and a few other little things. The old Singer is now another tool in my little workshop and I like having it there when I want to use it.

I am a big fan of DIY projects, and learning now skills, so I say you should go for it. If you hate sewing you can always sell your machine and use the money to buy something else.