Different strokes for different folks. How many people would have just done something else if they had to build a kit, figure out what electronics to run, buy all the ancillary gear like soldering stations and special tools etc? RTR gives a lot of people a chance to try the hobby for a pretty low time investment or monetary buy in. I was lucky enough to have some people in the hobby who gave me a ton of help and advice when I started. Not everyone is so lucky and reading internet forums will only get one so far.