Lol ! Exactly what pp said !!
We started off on our
DVC adventure buying a small resale contract & continued ( & continue STILL !

) to build from there. It's not a bad way to start & gives you flexibility to decide as you go along to do add-on(s) for additional points if you'd like more instead of starting off buying an amount of points you are not really sure you'd fully make use of.
Also, in the distant future should you find your vacation habits change & maybe you don't need as many points this gives you the option of easily selling off an add-on contract or two.
With a 50 point contract you can get approx. 3 - 5 nights in a studio depending on season. If you bank one year's points into next Use Year you'd have 100 points to use every other year. Or with banking & borrowing you can have 150 points to use every three years.