Depends on what you want to feel happier about. You can swallow the Kool-Aid dispensed by the packaging industry and their chums, or you can do what I did and spent 2 years checking out what really happens. Then you will realise what the true situation is. Why do you think they are so cheap? It certainly isn't because they are 'a product in demand'. Don't swallow the slick PR campaigns, just check this out.
https://www.alibaba.com/showroom/aluminium-can-scrap.html
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Alibaba.com offers 1,348 aluminium can scrap products. About 100% of these are aluminum scrap. A wide variety of aluminium can scrap options are available to you, There are 1,352 aluminium can scrap suppliers, mainly located in Asia. The top supplying countries are United States, Philippines, and Thailand, which supply 33%, 19%, and 18% of aluminium can scrap respectively. Aluminium can scrap products are most popular in South Asia, Domestic Market, and North America. You can ensure product safety by selecting from certified suppliers, including 12 with ISO9001, 1 with Other certification.
ETA - and ask yourself why white aloxite from the Beyer Process sells for $600/tonne? It produces far less aluminium than re-smelting cans (because of the oxygen) yet is worth twice as much. Strange, eh?