TeX appears bad from a distance, mostly from hearsay, until you have to write an actual technical book of certain expected high production standards and you realize TeX gives you the best shot at doing so.
There is a learning curve. It is an investment of your time, but it pays off.
Also, it is not like LaTeX et al are standing still in time. There are companies and teams working on improving the ecosystem everyday. I personally like ConTeXt unless I'm doing a predefined template exists (for conferences etc.,) where it makes sense to just use their LaTeX guidelines.