Even if modest, a dollar today will be worth only 50 cents in twenty years. If they aren't, you must. Money is one variable. Family is another. In my opinion, the probability of success is higher if your child needs little supervision or assistance.
Professional staff come and go.
Unless you are very lucky, you should not expect, over an extended period of time, that the same people will assist your child. I think the success of home ownership increases if you have family or friends to count on as a reliable back-up when professionals are unavailable or unhelpful. If you don't have this network of support, or if the network is elderly or few in number, success is less likely. Many providers of services are also proponents of home ownership. When arranging with a provider for the services needed for successful home ownership, insist on a written contract.