Serious question. I guess more I mean should I play the original first or skip right to the last?
Dark souls 3 may be slightly easier, but has fewer viable weapons (basically straightswords are too good). Its also rather linear, and some areas arent too impressive, yet it might be the better game for a first playthrough since the controls are very easy to grasp, and some people dont like struggling with controls. Dark souls 3 also has much more online activity now which is cool in some ways.
Dark souls 1 however has better atmosphere, weapon variety, its much less linear and i feel like the combat and enemy design is much more satisfying, it doest feel hard just to be hard but feels simple yet punishing.
DS2 is a solid game, but i dont think its a good starter, not many has it as their favourite even if it was their first souls experience.