Does there have to be an expectation of 'getting to the top' for any activity to be worthwhile? For every, say, golfer, who plays competitively there are thousands who play because they enjoy it. For someone to reach the top rank in any field the need to have the right equipment e.g. a good voice and ear Greatnan!, a natural talent AND the drive and determination to succed which will carry them through hours and hours of practice to hone their skills, will get them back on the horse, running in pouring rain, whatever it takes. That drive needs to come from within - no amount of parental or trainer influence will be enough.
My DGC are already having 'taster' lessons and experiences of a wide range of sporty and musical activities which they are totally enjoying. So far none of the coaches has spotted any particular aptitudes (even I have spotted some 'naturals' among their class mates) so they will not take these particular things further. However, all three are now able to stay afloat or go underwater with no fear and DGS, a physically timid boy, now throws himself down shutes, climbs trees, stands on his head after 2 terms at gymnastics. A no pressure, non competitive regime has given a big boost to self esteem and confidence to them all.