Nobody forces you to buy it
Correct and I recommend nobody to buy it, because buying it is worthless and only costs you more than it gives
and you do not have to wait the entire cooldown
I know I don't, but if I don't wait those 10 minutes, I will spend a portion of that time waiting. Let's say a match is 17 minutes including the orbit screen and BB is 10 minutes, queues are 3 minutes. That means I have 1 BB every 30 minutes.
If I queue up immidiately, I have played 2 matches (34 minutes), waited 6 minutes minutes, meaning I'll have 1 BB every 40 minutes, that's a 1/3 increase in time.
Play, learn, improve with BB.
Eh you're the one to speak 
Or cycle between two fleets.
And the point of this is? I want to play a specific fleet, not cycle between them.