Mate, go for it.
There are a lot of miserable old gits here who resent your attitude, maybe you do need to grow up a bit, but military flying training will get your attitude where it should be.
A lot of RW folks are failed FW and have a sad attitude to go with that, dont listen to them.
I fully agree that RN is the way to go if you purely want to fly, then RAF followed by AAC.
If you want to command people, consider the AAC first.
If you want to have lots of time off and wear chip bag hats, the RAF is the way ahead.