That is not always the case. Master limited partnerships and REIT income is not taxable to the partnership or the REIT.
While that's true, those entities are taxed as partnerships, and so "pass through" income to the investor. Any returns investors get are treated as ordinary income (unless the income was not considered ordinary at the level of the investment vehicle). There are certainly additional deductions that could apply that a normal individual might get, but you don't typically get capital gains tax treatment on the ordinary income generated on a pass through basis.
If the vehicle earns rental income or a gain from a sale of land, that's ordinary income. If the vehicle earns dividends, though that's a capital gain. Master Limited Partnerships are, typically, mostly earning money in the form of capital gains as they were created specifically to encourage investment in natural resource development companies.
It seems as though, if anyone is investing in MLPs, the tax code is rewarding them for economic activity the government happens to like...so unless you find the government's decision to be unwise, then it's hard to fault someone for using that kind of vehicle and its tax benefits.
If you think it's unwise to have MLPs and to favor investments in one sector over another (as I do), then MLPs and REITs are a bad thing, but there's still no moral problem with those who choose to use them. Of course, if you question the wisdom of Congress is setting up these tax rules, then it's reasonably likely that you question the government's ability to select winners and losers generally (as I do). At that point many of the proposals from the State of the Union, like favoring "alternative energy" over the winners the economy would select naturally, look to be of questionable value. (I feel the same way about proposals to give tax breaks to "manufacturers" from Santorum. It makes me wonder what part of "comparative advantage" he doesn't grasp.)
I agree with you that it looks like Romney will not win the nomination. That leaves Newt. Newt is, I think, by far the preferred candidate from the Democrats' perspective, since he's narcissistic, wacky, and has troubles with his personal filter. I know that I can't in good conscience vote for Newt, so if the race is between Obama and Newt, then I guess I sleep in this election day, and choose neither of them. On the plus side, I can then tune out of election politics for the rest of this year.
I watched the SotU in hopes that Obama might adopt a fiscally responsible stance...but other than a few words in passing referencing the debt, I found little encouragement.
Edit: I also haven't mentioned that no candidate (not even Ron Paul, who I reject for various reasons) seems to favor open borders and no limits on immigration save screening out criminals (and people with contagious diseases). Open borders, I do believe, would be the greatest anti-poverty measure of all time. Not quite as great as some suggest (see link below) but closer to this position than it is to the notion that illegal immigration is somehow a harm to us:
http://pubs.aeaweb.org/doi/pdfplus/10.1257/jep.25.3.83
I did once hope that Obama would lead the charge to liberalize immigration policy, but in fact my experience and what I've read both suggest that he's stepped up enforcement relative to what Bush was doing. I have a secret hope that Romney would be more in the Bush/Reagan model. Or perhaps that Mankiw could prevail on him that "free markets" means includes labor markets, and that includes foreign workers.
Perry was probably closer to me on this than anyone. (I suppose Obama may be on my side "deep in his heart", much as I am told that in his heart he supports gay marriage and wants to close Guantanamo (as do I)...but he hides his heart and gives voice to and acts on relatively harsh policies on those issues. I have little use for a politician who may secretly agree with me, but then does the opposite.)