You just posted exactly what I said. Good job for confirming my statements. People carry personal items onto planes; it goes without saying they should be handled with care by other passengers.
Like I said to the other guy, if this is ok with you I’ll just put bumper on my car and smash into your car as I parallel park, having no regard for anyone else’s property but my own. That would make perfect sense in your world, right? Since your car is protected all is fair game. Joke. There are other humans on this earth, not just you. Learn to deal with this fact properly