Cliff..Hi Craig,
Easy now. Why the hostile approach here? Did I do something to you in the past or WTF?
Many would say, yes, 1/2 the sky being clean, or half the water being clean is better than none. I tend to agree.
You missed the point. The point is not to achieve 1/2 anything, rather it's to achieve 100% improvement through a process of leading by example. The US should lead by example when it comes to environmental best practices. Others will follow, either voluntarily (when they see the benefits, or, that continued economic prosperity depends upon it) or with a combination of trade incentives and diplomatic pressures. This is how things get done in international politics.
I happen to live in a city that leads by example - Seattle has the highest recycling rate of any city in the US - about 60% of our garbage is recycled. That's a lot of waste that doesn't go into a landfill. Other cities are following Seattle's lead now that there's a clear example of what can be achieved. So, yes, "I dispose of trash" but it's likely that I pollute less with my trash than you do with yours.
My family and I spend a lot of time on the lakes and oceans here in Seattle, mostly sailing (which happens to be quite environmentally friendly). And, yes, there's an unwritten code amongst sailors to pick up floating trash such as cans and plastic bottles, and we do so regularly. My kids get a kick out of spotting such items and relegating them to the recycle bin.
Hope the above answers your questions completely.
I was being a wise a$$...I apologise
Carry on.