Scientific research quite strongly links excessive screen time to psychological problems in children. You can be spared from science, if you'd like, but it does no good to ignore real problems just because you want to stick your head in the sand.
Edit: And for the bogeyman's sake, if you'd like the "proof", that's what Google is for. This isn't some fringe view. It's about the same as asking me for proof that smoking is damaging.
Edit: And for the bogeyman's sake, if you'd like the "proof", that's what Google is for. This isn't some fringe view. It's about the same as asking me for proof that smoking is damaging.