Think about people's lives 50 year ago. What did people use to have instead of today's modern devices?
вот по этому образцу
People's lives have changed a lot because of... People used to have ... instead. Now they use ... It's much more convenient / fast / economical / pleasant .. But it's less natural / beautiful / healthy.

In the place of the modern things 50 years ago people used light candles and torches instead of the TV and computers back because then there was no any.