Ah, but I enjoy building.

I enjoy building, too. But there are so many things for me to build that I don't mind paying for shortcuts so I can use my limited time to build things I want to be building.

Even if your audience is other people who enjoy building, it can work because they might build on top of your thing. Think about an arduino. It's open source, and so maybe you could build it yourself, but there's all sorts of other fun stuff that you can build when you can just throw money at that part. It unlocks projects.

Personally, there's many things I enjoy but I try to focus on the ones I enjoy most. Which for me is generally things I haven't done before. Spending money rather than time is one means to enable that.