For this it is more a question of which you would rather have, as it is your deck!

Which are you more drawn to? Which fits the style of your home?

Having owned both natural would and composite, I prefer a composite like Trex, which I have now. It's low maintenance, comes in tons of colors that resemble natural wood, will never fade unevenly, warp, or rot, and is environmentally friendly (made from 95% recycled materials). If you do unpainted wood, you will have to seal it every year with Thompson's. A well-maintained hardwood deck like Mahogany can last you 40 years or so (10 with no annual maintenance) but sooner or later it will rot and need to be replaced. Trex should last the lifetime of the home.

Agreed on Trex. They make a great product if you are open to that as an option!

I do not understand the phrase "walk out basement". Does this just mean that you do not have an elevator?

I have Ipe wood decks. I pressure wash to remove soot build-up. I apply an special finish for iron wood. They are gorgeous. But they are work. I have varnished Mahogany wood framed patio doors. The Mahogany fades to a light gold tone that requires stripping and sanding and varnish to reveal the original rich tone. They are gorgeous. But they are work. I have never had composite but I think I might go for a porcelain or stone tile next time for any exterior/exposed decking.