Having a license clarifies what permissions are you giving to someone who downloads your code. The practical benefit is that others can clearly contribute back

Having a license clarifies what permissions are you giving to someone who downloads your code. The practical benefit is that others can clearly contribute back or build on your work without any legal concerns. Something like MIT gives them permission to do anything as long as attribution is maintained, while avoiding liabilities. But there are others you can pick: https://choosealicense.com/ https://choosealicense.com/