I am in the same boat as you, my kids have never had screens. However I do wonder that if by not teaching them to use tech sparingly at a young age, will they just fall down that hole at an older age when they are young adults?

Mobile devices and social media does not get less addictive as you get older, otherwise anybody over about 30 right now would never have any issues with it. Therefore I worry its entirely possible to bring your children up completely avoiding the downfalls of screentime, but then set them up to fall later because they havent developed the guards against it or even havent 'got it out of their system' so to speak.