3. Although there is a warning when you push the MAX button, a good practice is allowing users to disable the button completely, since if it is there you are tempted to risk all your balance more frequently than if it weren't there(right next to the 2X button).
Ahh the good old "BET MAX" button. I remember back in 2015 or so I think I lost an entire BTC due to that button. If I recall it was on Primedice and I would manually adjust the bet size and I would pretty much never use the "BET MAX" button except in 2 occasions. The first time was due to the slip of a mouse and I ended up winning I think like 0.20 BTC due to the mistake, was very excited.
The second time, not so much. It was late and I was doing probably 100-200 or so manual bets and for some reason didn't move mouse to the correct spot, hit BET MAX and then hit Roll and it was a bust. Felt very bad. And the weird thing is that my brain I think saw that I hit the max bet and was going to stop it but my reflexes were too fast and hit the bet anyways.
So this is why many dice sites have removed this feature or at least gave people an option to disable it due to too many people complaining. I think on mobile the frequency of hitting it accidentally increased actually due to the poor navigation of some devices.