I have no idea your situation. Maybe your line of thinking is justified.
I have to tell you that in my family, looking back two or three generations, the people who married into the family were often more responsible than the family themselves.
I find ppl fall into two categories: spenders and savers. Quite often, successful marriages have one of both.
And for some odd reason, my blood-line family has its share of spenders.
Very often, estates would be better off managed by the spouses who married in.
Again, your mileage may vary. Peace, love, and Happy Thanksgiving.