Everyone keeps thinking of their home as an investment. This is historically inaccurate thinking. It's only an investment in that fact that you are forced to sock money away every month. Outside of a few bubbly times in history, you would almost always be more financially rewarded by renting and taking the money you save plus the money you don't pump into repairs and improvement and buying the S&P. With that said, we also know that nobody does that so homeownership becomes an exercise in saving money over the long term.
The primary benefit of home ownership is having your own stake in the ground. No landlord can kick you to the curb when they want to sell or move their mother in-law in. It's your home. The next benefit is that over time your fixed mortgage stays the same unlike rent which will move up with the market. So while your mortgage may be 30% of your income when you first buy, it could be more like 15- 20% after 10 years of raises and promotions.
Finally, if you compare the 40 year mortgage to the alternative of renting, you could view renting as an eternal interest only adjustable rate mortgage. You will never build a penny of equity and the payment will climb every year. I love a 40 year mortgage option for first time homebuyers. It falls right inline with the FHA first time buyer program helping you by lowering the downpayment.
The hardest part is getting that first house. I bought my first house in 2011. We scraped, clawed, and pinched every penny to get 5% down on that house on a 30 year FHA loan as we were coming out of recession and just hit our early 30's. 2 years later our jobs had stabilized, we had a few raises, and I refinanced the house into a 15 year loan and 5 years later I had 60% equity when I sold that sucker. Couldn't have done any of that without the FHA or a VA loan. If a 40 year mortgage had been available I would have used it to do the exact same thing at a little lower monthly payment for those first 8-12 months when things were real tight.
To answer the questions.
1. Yes
2. Greedy? Is trying to introduce a new product that makes a profit greedy or capitalist is what you are really asking. I think you can be both capitalist and help people out... A 40 year mortgage can do that. If the banks want to underwrite it with no gubment backstop like Freddie or Fannie, they can go for it in my book. If Fannie and Freddie get involved I would like to see some controls like they have on FHA loans so people like me won't abuse it and go buy up a bunch of rental properties.