Its not unreasonable for them to follow you and you probably realised it now you're an adult theyre bored, their attention spans arent anything to be proud of and they look up to you. Now that you look back on it, its very sweet but at the time, it was beyond annoying! You just couldnt get a moments peace. No matter what you wanted to do, be it sitting down in the lounge and watching Toy Story, playing football in the garden or doing your homework, theyd always appear and want to play. There was no such thing as personal space when you were growing up.