Just a Starcraft player, woundering what makes LoL so interesting?

I have been watch starcraft this weekend and tried to watch some LoL is well! I don't really know what so interesting about it, So am I missing something, I've played about 90 games of LoL and have never really liked watching am I missing something?

Out of interest have any of you tried watching starcraft? if so what do you think about it?