Think of it like fishing. A bluefish might only be able to bite your finger off if you mess up but once you start fishing for great whites well you might get your whole arm bit off or worse from the same mistake. I have seen some smart people do some pretty dumb things with rc airplanes esp newer people (including myself ). Usualy because theres alot going on or they are still nervous or just didnt realise the result that was about to happen. Not only is it alot cheaper to get your learning done on smaller planes its also much safer, for you and everyone else around.

And damn u people with 4 car garages and trucks&trailers. Im stuck in an apartment with an audi a4 as my only way to haul my planes around so im pretty much stuck with 1.2 size for the time being