nah its not pointless, 486's have some excellent uses. I have my old 486 lappy in use atm, heres what ive done with it
either
Run Smoothwall on it..but its slow slow slow and kinda only barely works
run linux on it. This is my primary use, i have slackware 3.7 on it (just command line, no Xwindows) and do most of my C programming on it =) Vi is much better than visual studio imho
stick on dos and use it for old games..Commander keen, doom, monkey island..they all run fine on it =)
stick windows on it, get a large HDisk and use it as a download rig thats left on 24/7, a half decent psu can make a 486 PC almost silent
there ya go, some uses for the old faithful =) i cant find much use for my dodgy old 80386 tho =)