Not all the advantages, but most.

I've got bikes with regular block pedals, mini clips (small clips with no straps), full clips, and clipless, and I like them all. However, I don't think I'll ever get another bike without at least mini clips. The foot stability on the pedal, and the ability to have an effective forward stroke are worth their weight in gold, and you can get dandy mini clips for less than 10$.

I'm a fan of regular clips for most riding, since you can wear any shoe you want, and they are easy and cheap to work with.

I'm a fan of clipless for my 'riding for riding' sorts of rides, and when I'm doing offroad stuff, because I love the extra efficiency and control.

I suppose I sort of like them all... But I'd encourage anyone to try something beyond block pedals. Its a big step to go from blocks to mini clips, and then small steps up to regular clips and clipless.

peace,
sam