i get that but cramming more and more photocells into an area that is not increasing also has its disadvantages, there are more dissadvantages to it then the advantage of cropping.
If you're cropping then you're not close enough, if you cant get close enough buy a longer lens. I do agree that cropping is nice but there are far more advantages to 45 or less MP at this point. 30 is plenty in my book!
I'd disagree about the disadvantages - it all depends on your style of photography. The advantages include the ability to increase your cropping, the reduction of the impact on the bayer filter on colour resolution, the ability to get almost the same dynamic range as a larger pixel sensor by downscaling images and better final resolution imagery when editing with, for example, rotating to fix wonky horizons.
The biggest downsides are a reduction in dynamic range (but see above), cost, size of raw files and the impact this has on buffer size and frames per second.
For me the advantages outweigh the disadvantages, for you and others it's the other way round. I'd never tell people that there's no need for a lower megapixel camera and all cameras should be at least 70 megapixels, and I wish people who don't need high resolution sensors wouldn't keep saying that they aren't needed. You don't need one, that's fine! But others do, and I'm glad they're coming.