> Actually it's one of the best things to do in software
Depends on your target audience - easy to learn doesn't necessarily mean usable. It's absolutely a good target for dealing with most people, but if your target is expert users it's not necessarily a good idea. Despite noises about linux for the average user, in reality it's a system designed by expert users for expert users - and for those users it is highly usable.
Autocad is a highly usable system to its target audience, but stick a beginner in front of it, and they'll not have a clue to do.