throw it away or fix it?

Do we fix it or throw it away to get a new one? 

In today's life, we buy a lot of things and dump them away once we don't need them or once they are damaged.

Some things you can throw but there are things that can never be thrown into the dumpster. Like your pet got ill, throw it away? your plant is infested with weeds, throw it away? Relationship took a turn, throw away and get a new one? 

if it's not right to throw it away, then learn how to fix things.