My perspective shifted over time as I watched children become teens, then adults, and marvelling at how I thought of them changed.
It sounds lame, but I came to think of kids a people too vs just children. As in they are adults whose brains haven't finished wiring themselves and they deserve not just to be treated with respect, but also to be thought of respectfully. It's obvious to me now, I mean I can remember how some adults treated me all the way back to 3 yrs old or so. I'm that kid, just older.
I am a tab hoarder as well and switched to Firefox last year for this reason. I have a 16GB MBP and I had to restart Chrome twice a day due to memory usage. The most I saw was 25GB of RAM used by Chrome (thank you solid state swap!)
When Quantum was released, I did a side by side comparison, opening the exact same tabs in each browser, switching browsers each day, manually keeping tabs in sync. Did this for about two weeks. For my use case at that time, Firefox's memory usage was 1/4 of Chrome's right off the bat. After a full day of use, Firefox's memory would double, while Chrome's would triple. Given the starting numbers, this meant at the end of the day, Firefox would be using 4-6GB of RAM, while Chrome's memory usage would be something like 16-24GB.
By the time I switched, I had already moved to Rambox for Hangouts and Gmail and stopped using Keep, in an effort to reduce Chrome memory usage. Rambox mem usage was about half of what I saw with the Chrome Hangouts plugin.
Although I use FF 90% of the time now, I still prefer Chrome, probably due to using it for so long. I especially prefer the Chrome bookmark manager. I really wish I could find a good way to keep bookmarks in sync between browsers! Any suggestions??
A big bonus has been the huge improvement in battery life. I had no idea how much I was losing to Chrome. Safari is supposed to be great for that, but plugins and the fact I'm an Android user means it doesn't offer me much.
The downside is that FF has made my tab hoarding worse. Still, despite doubling the number of tabs, mem usage is still half of what I saw with Chrome.
As for the unused memory is wasted memory argument (which may be tongue in cheek re: browsers), my browser is not my OS and I have a lot more going on than just a browser. 32GB MBP can't come soon enough.....or a touchpad experience on any other hardware+Linux experience+lots'o'RAM. 3 yrs ago, I finally gave in and tried Mac. Touchpad experience is probably the number 1 thing that keeps me here.