I started running  model engines 50 years ago and hand started everything. Now I carry 2 starters to the field all the time. One for my own use and one for all the people who come to me saying " I don't know whats wrong. It ALWAYS starts in one or two flips of the prop. But today something is wrong." I lend them a starter and whatever was wrong magically disappears. I'm not saying you can't hand start, I certainly can, but do you want to spend your time flipping and fiddling or Flying?