There are two types of people; Tax users and tax payers.
Tax users are not just welfare recipients. All gov’t employees, including the fireman who carries you out of a burning building, are tax users, even if they pay taxes. Their entire income, justified or not, is derived from tax payers.
No matter how you slice it, when the ratio of tax users to tax payers gtets too high, we’ll be on a downward trajectory that has to crash at some point.
Following that line of thinking, all citizens are "tax users". If it wasn't for you and your car, taxpayers would not have to pay taxes for the roads you drive on. If it wasn't for you and your kids, taxpayers would not have to pay for the schools they go to. If it wasn't for people who get married, taxpayers would not have to pay for our court system wasting time on divorce cases.
If it wasn't for citizens, we wouldn't need any taxpayers. The problem is that we have too many citizens who are only tax users. Around 60% of the over 16 workforce pays no federal income tax at all. This, as you say, is dangerous.