As someone who still lives here with his family, I can write the following

First of all, absolutely every person after the age of 18 should try to take financial independence into his/her own hands (when he/she can achieve this depends on his/her business acumen or the path he/she follows), but of course some help can be received from the family when necessary, but one should not get used to it and act as if he/she will never receive any help.

Another way of looking at it is that joining forces financially with the family will always strengthen your hand and you will be able to generate more income. in short, you should always have financial independence, but you should not ignore the possibility of increasing your income and theirs by cooperating with your family.