I agree that money is something we need for resources, and it can be very difficult to lack money in complex life situations. But I believe in paying taxes because that support so many crucial services (in my country, that includes not just pensions and support of particularly vulnerable groups, but also free higher education for over a half of students, very cheap public transport, and free basic medical services).
And I think it's okay to give some money away and to waste some money sometimes. It happens, and money is just a means for more important things.