I can't wait to see FreeCAD or something like it mature into something on the level of Blender. The problem seems to be that other free-ish CAD software exists out there, so there's not much demand. Another problem seems to be that overlap between people interested in solid modeling and people able to program for solid modeling is very small.

For sculpting, Blender actually does pretty well. And for parametric solid modeling, Fusion360 has a free license for hobbyists and startups. For programmatic non-parametric modeling, there's OpenSCAD.

But like others have said here, FreeCAD is lacking a lot of polish, and that makes it pretty hard to use.

There is also CadQuery, which claims to have fundamental technical advantages over OpenSCAD: https://github.com/CadQuery/cadquery

I've tried CadQuery and had a rough time of it. I haven't used OpenSCAD at all though, so I can't compare.