a dSLR and a mirrorless are simply two different ways of taking photographs. The technology in mirrorless has some disadvantages (relative to dSLR) but also that same technology enables the mirrorless to some things better...automation of AF functions is one of those things, but everyone does not need those 'benefits' for the shooting that they do.
For example, I scarcely ever shoot even 5 fps sequences, much less needing 30-40 fps. And animal eye focus is something I almost never need.
If mirrorless does something that you need, which dSLR cannot do, then you have a true reason to choose mirrorless and leave dSLR behind.
And while mirrorless may well be 'the future', there are cameras still in use today which are 50-100 years old, and happy users of these 'antiques'. A lot of folks do not transition to mirrorless YET, and one of the reasons is that mirrorless lenses are often more expensive to buy than the equivalent lens for dSLR; 'why' the price differential is often known only to the manufacturer, so many folks are waiting for more used mirrorless lenses to be available in the market, to reduce total cost.