I think the real issue is that humans DONT think beyond their own needs. You have people who think having a picture perfect green lawn is somehow an achievement. If its not perfect, you must be a lazy sack of crap or have no pride. Think Hank Hill from the animated TV series, King of the Hill.
Same goes for gardens and so on. To achieve this they poison the earth again and again and again. Continuously spraying and pumping all sorts of life destroying chemicals into the air and ground. Just so they can stand on their porch, arms akimbo, nodding in satisfaction of the holocaust they just unleashed against multiple forms of life, both insect and plant. All for a crappy lifeless lawn.
If grass needed bees to grow you can be sure we'd be up to our eyeballs in bees. (I come from NYC/Long island so I'm more familiar with urban earth poisoning. I'm sure farming has as great or a much larger impact as well. Just my POV)