Hi Cscoles,
Of course, anyones favorite strategy should be respected, and I do, too. But still, it wouldn't work for me.
Why?
First of all, I don't think you get the same resources back if you scuttle everything (haven't checked it yet but usually, in RTS/strategy games, breaking down buildings or structures do not always result in an equal return of resources) as what you payed for. Destruction of capital (money) is not my thing...maybe the losses are minimal, I don't know, but still....
On the other hand, you can USE pirates for your advantage...other posts in this forum already showed this. Especially in mid-game or later, and you've built your fleet carefully (including updates etc.), you can get "free experience points" by sending your fleet to every system the pirates tend to invade and whack their sorry asses with your fleet. You'd be surprised to see how fast the experience level of your cap ships grows!
If you do this a couple of times, you'll have a fleet that can cope with any enemy....
Another thought I have when reading your strategy is, that it takes a lot of effort to scuttle your structures etc. every time the pirates are attacking your system(s). Sure, sending the fleet to every corner of your border-planets (= the planets bordering an enemy, or pirate, planet/asteroid/base) can be a hassle every now and then, yet still, the rewards are much bigger I think.
But hey, if it works for you: fine! Keep up the good job I would say! But again, maybe my rants and raves are food for thought in your -and maybe others'- case....
Many regards,
TheCrow68