Maybe you don't want (or don't can) play every day.
So f.e. you can only play at the weekend, so you don't want to play more than 24 battles a day, but maybe you want at saturday or sunday just enjoy playing splinterlands as variety from your work. Why you cannot play than more than 50 battles, even when you don't played for 5 or 6 days before. So why the maximum energy is capped at 50, why not let the maximum run till 100 (or even more) and let all other like it is ?
... Maybe you have childreen and they would like to play also at the weekend ...
Well, if you want to play more, after the ranked battles you can do your brawls and then the 756 daily tournaments with every of your 3291 accounts. :-)