I haven't set it up since getting a new laptop, but I used to have lots of math notation available on my keyboard (e.g. AltGr, <, = would give ≤), and LaTeX set

I haven't set it up since getting a new laptop, but I used to have lots of math notation available on my keyboard (e.g. AltGr, <, = would give ≤), and LaTeX set up so that I could put those characters directly in my documents, and it was so much nicer than doing everything with backslash.