It's possible to start playing Eve, thinking that you'll only be a casual gamer. Then before you realise it, you'll have multiple accounts and characters, all specialising in different things.
I mean, you need a miner and he'll need a dedicated hauler and while you're at it, he may as well be trained in science as well for refining. Then you'll need someone to do missions and.......
etc etc etc.
That's why I gave up after far too long, sold everything and walked away.
^^ Indeed by the time I stopped playing I had/had access to alts:
-3x purely cyno alts (1-2 had mining capabilities)
-Freighter/orca/widow trained character
-Purely widow trained character (plus POS guns)
-Main that was heavily trained in capital skills (dreads and carriers upto supers plus rorqual) + marauders and blackops (Also mining capable *cough*)
-Defensive carrier/logistics/orca trained pilot with full ganglinks/fleet boosting, command ships, etc.
-Minmatar specialised character especially trained for blockade runners, webbing loki, naglfar dread and freighter - also trained for mining and had most industrial skills trained. Also trained for some ganglinks.
-Specialised scanning alt who could also fly transports, orca and was jf training.
-2x alts trained just to sit in mammoths for logging assets off in space (plus cyno capabilities)
-Carrier holding alt in training
-Super specialised character
All but the last 2 I trained from scratch myself.