Save Money
One good thing about minimalism is the fact that it guides you towards prioritization. For those that have accumulated material stuff that they have no use for, by decluttering you can get rid of them.
Which you do not necessarily give away, you could have a yard a yard sale and earn back some of your money.
Or ultimately realize what you need hence stop a cycle of senseless procurement of items based on desire or social competition.
Feel the Freedom
Minimalism campaigns for a simple, sustainable form of living the kind that is free from certain strains brought about our choices, societies even families. Once you chose to detach yourself from material stuff and the stresses that come with them such as obsession to possess more and more, or possessing to impress others so that you can portray a certain standard of living.
Then you will get to feel the freedom and the lightness of having a persistent heavy load lifted after a long while of weighing you down.