Re: I disagree...
Yes, it would be better if we had a presence in space to an extent of a viable population on one or more planets/moons.
No, I'm not impressed with the rest of it. You seem to misunderstand the concept that while we only have one planet and while said "blades of grass" etc keep it limping along - they are indeed special along with everything else that does so. An example being the American wolf. It indirectly improves the health of its habitat - which benefits its prey (which rednecks love to pepper with armour piercing bullets), but rednecks still shoot, poison, trap them. Personally I'd solve the problem by culling the rednecks who break the law by killing them. That way every one wins.
The wolves - no more illegal culling, generally by or instigated by crusty bigoted geriatrics.
The health service - less crusty bigoted geriatrics to treat.
The environment generally - less clapped out trucks owned by crusty bigoted geriatrics (a stove bolt six were good enough fer yer great grandpappy so it's good enough for you...)
Human society - less people getting infected with the CBGs bigotry and buck toothed retardedness.
There really is a circle of life, and while grass might not be important in your opinion - it is to the animal kingdom. Tell you what, why don't I razee your home, take your car, smartphone and money and leave you to survive on your own wits. You'd be dead in a week. That's what happens to the animals when some nerk with your sort of attitude wipes out a distinctly unspecial area of woodland or grassland..