I felt very sorry for the (still fairly young) ex-soldier on TV last night. He was quite badly wounded out there and is still suffering the effects, and he lost ten mates from his company, killed. Now he is asking what was it all for, and it obviously hurt him to see a place he had fought and bled for back in the hands of the Taliban.
It's natural, I think, to want to believe that sacrifice was not in vain. If you had a son or daughter killed in a war, would you not want to believe that it was to achieve some greater good? Not that it was pointless? I can understand that.
The truth is though this war was unwinnable. We also have to face up the fact that our Army is now quite small, and not particularly well-equipped. It really isn't on to play Billy Big Bollocks around the world unless you are prepared to pay for our forces a) to be adequate for the job in terms of numbers and b) as well trained and equipped as any army in the world. Politicians in this country get off on pretending that we're some massive World Power. We ain't, and it's time to accept it and move on. We can't solve our own problems, let alone every other fucker's.