I race street online on the Nordschleife, and when I began some 12 months ago, I came in a little hot headed, but quickly changed my ways to brake earlier than anticipated, and or let my adversaries (mates) pass me if they are trying to at a dangerous moment, it's not always about winning or striving for that lap time, it's also showing sportmanship. My eyes are all around my head, at the wheel, just like in RL. Situation awareness.
If however some kid/adult alike is reckless to me 2 races in a row, I will show no mercy to them, and slam the off the track silly, or bump draft them causing their adrenaline to boil over, but I won't bump them off intentionally, I will nudge them when safe, but brake earlier when said drivers would gladly knock ME off (i.e Bergwerk) type corners, so they will end up oversteering from their sudden lack of their rear downforce, due to my wind draft tunnel, which thankfully, GT5 simulates so nicely
Or I'll pull out 2,000kg Jag and enjoy their richochets.