Sure ... if you like horse poop all over the place. Before cars people used horse drawn carts and they pooped everywhere. I prefer cars, thankyouverymuch! Horse poop draws green flies and those flies bite people ... who wants to get bitten by green flies after they've been munching on horse poop? A lot of people died of nasty diseases from this. Last time I answered a similar question with an answer like this it got deleted for some strange reason, hopefully this time it stays.
In my own opinion, the current life in mother earth is much better than the one there was in 100 years ago. Technology has improved and people have become more literate making life easier and bearable.