How did I come into TeX? I used it to typeset my PhD thesis.

It was the strangeness of TeX that I found challenging and interesting. I hate \def and \let because they can cause havoc. Unfortunately, \newcommand offers no means to protect and privatize commands. It’s a miracle that TeX has survived despite \def and \let. TeX doesn’t impose a programming style and it is regrettable that LuaTeX hasn’t corrected this situation.

My packages on CTAN include catoptions, keyreader, keyval2e, ltxkeys, pgfkeyx, skeyval, loops, xwatermark, storecmd, ltxtools, and newenviron.