I think this is the general conclusion in the topic that it depends on the situation. Maybe at the moment, emotion will also alter your decision at the moment. I suppose I would indeed never accept service to attack another country, only to defend my own country/land.
I actually started with it this week. It is partially due to privacy but also because I lost a sense for value. It is really easy to press a button online and pay say 20 euro. Not that I am irresponsible with money but the numbers on your bank account feel so meaningless.