It would be nice if we could make use of trash, not just the trash in the ocean. Too much stuff is disposable these days. Lots of cheap crap is made and it's a shame. Even televisions are disposable these days. Used to be once you bought something, it lasted for many years and if it broke you would have it repaired. People collect antiques and collectibles and just the fact that there are so many really old items around tells you how well they were made. I doubt that in the future people will be collecting the crap made today.
If they make something nice out of the junk they collect, then sure I'll buy it if I need it. I'd like to see some practical items made that people actually need. Repurposing items is the rage now. Saw a picture of a green house that someone made from plastic bottles. Some might say it's a bit tacky, but better than sitting in a landfill for decades.