2 weeks, tops.
20 years
30 years
For a lifetime!
I still have trades going back to when I physically bought them in the 1990's and plus everytime I go to conventions I'll spot an even earlier print of a book still in good condition. For the slimmer trades I bag them with regular comic size bags.
In the comfort and safety of a home........... yes
in a open aired land fill.......... no
There are only so many ways to ask the same question, and you have done so in spades.