Inconvenience, however that is comfortable.
To be honest, the Leica M is not useful camera. This is not the camera for everyone. At least, I know it. First of all, it doesn't support auto focus, and I cannot shoot objetcts closer neither. But I love this camera. Why? It may be because of shooting experience which this camera gives me.
Manual focus is not so bad. If you got used to.
Okay. I have to agree with the opinion that it's hard to use manual focus when you taking pictures of objects which move fast. When taking pictures of objects which move fast, auto focus is useful. I know it.
However if you once get used to use manual focus by practicing again and again, it's not so inconvinience. For instance, my best friend "Yuzu" moves so fast, but he doesn't move fast always. Sometimes he just stands. Then I can shoot. Example photo below.
And there's one more thing why I like manual focus. That's I don't need to wait for camera adjusting focus. And you know that sometimes auto focus of camera doesn't focus where we want it to be focused. But in case of using manual focus, where to focus, what to focus, everything depends on us.
Before getting used to use manual focus, it's absolutely inconvinience. But after getting used to, I guess it'll make you be able to shoot photos what you want to shoot. And in some case, manual focus works better than auto focus.
In case of mirrorless with auto focus, sometimes you have to tell cameras where to focus.
I wrote this above.
That's I don't need to wait for camera adjusting focus. And you know that sometimes auto focus of camera doesn't focus where we want it to be focused.
If you use manual focus, all the issues above are fixed. What you have to do is just turning focus ring. I usually do that in fact.
But, Q
If you use Leica M, I suggest you to have the Leica Q as well.
Leica Q is the best solution for users of Leica M. Leica Q makes you be able to do what you cannot do with the Leica M. Okay, shooting experience of Leica M is better than Leica Q. But both are a bit similer.
You can shoot closer to objects with Leica Q. You can use auto focus when you want. Both of them are clearly impossible by Leica M.
I'm not a sales person. What I wrote here today is just my opinion through using both Leica Q and Leica M.