No you dont need to get one, thats the simple answer...
I had issues hitting the rev limiter so this was a good way to solve it, the fact I now have a sports bike

and it flies is just a bonus.
You may consider that getting one now as a standby might be a good thing in case they go up in cost, there cheaper than the Triumph one, the starting is just about learning how to start your bike again...
As you have no issues you need to consider the cost, its a luxury

do you need it no, do you want it YES LOL