Stupid bounties and Impound fines

I don't know if anyone else has had this happen but I think its a little ridiculous,

returning from a quick rescue run in my python when I got interdicted and submitted cus I had the feeling I could win the fight,

The guy interdicting me was a side target for on of the passenger missions I had so I opened fire on him this resulted in me getting a bounty for assault then murder which I think is stupid as he was planning to attack me anyways,

Eventually I turn myself in because I kept being interdicted by the security ships and interstellar factor wouldn't let me pay it off despite going over 4 hours without killing anybody,

I'm used to the unwanted trip to a prison ship but what's annoying is that I'm hit with having to pay the same amount I would've had to after having a thargoid turn my ship into space dust to have it released from impound both of which from what I know would've removed the bounty on my ship so why does turning yourself in exist if it has the same result as being killed just with a few hundred lightyears of travel added in?

Sorry for the minor rant I just wanted to see if this annoys anybody else?