I think a lot of it is down to the parent to nip the lazyness is the bud? My daughter was starting to get into the wii/telly rut, and I down right refuse to allow her live inside. My husband's nephew refuses to play sports and lives on his DS, in the last few years if he isn't playing it he's in a pout or talking about it.
If the weather is good you can be darn sure she isn't sitting infront of the telly - she's been told that with the evenings getting brighter she will only be allowed 1 hour of telly/games a day, which I feel is more than generous. Today she rode her pony and when I thought she'd want to go home; she surprised me by asking if she could watch me ride Bandit.
Stop for a minute, open your mind, learn. You may not agree with what I say, I may not agree with what you say but we will both learn something new.