Your “working life” justifies you being rude?
Pathetic.
Please provide some documentation that you own the space in front of your seat. It is something one most often sees from people making a once in a lifetime bucket list trip to see the world’s biggest ball of twine. Frequent travelers know better, although they make accommodations for people with physical issues, mothers trying to deal with children, etc. Aholes, on the other hand, not so much.