hiya graeme
I stopped playing the GW stuff years back, I guess when I got my career underway I just sort of "grew out of it".
I played Warhammer 40,000 too, I had a full Chaos Space Marine army with converted warlord, lots of remodelled miniatures i.e bike squadron based on rough, uneven bases (wheelying and the like)
but my main love was their smaller, skirmish based game MORDHEIM !!! I loved it, the way your warband developed with experience etc. plus the setting, a "ye olde" style world that had been hit by a meteor with everyone fighting in the ruins....it spurred me on to create masses of terrain - which in turn led to me getting an article published by GW in their Town Cryer magazine.
Since then I've drifted out of wargaming and got into modified cars (the real ones :-) ), online gaming, more "adult" pursuits too....
....I guess what really happened is I just went through that phase most people do, the phase where they discover drink, drugs, women and parties.