There are some tanks that use high watts, (the baby beast comes to mind), that use over 100w
Like you I very rarely get over 25w, but I do have 3 dual battery mods that will do over 100w, at the watts I run the dual batteries last a long time.
If you have a car that is capable of 150, doesn't mean you have to drive it that fast.
2 of the mods I use daily are Kanger 75w TC mods with a Subtank mini on top, a very good setup in my opinion.