Sportsters have a high center of gravity and thus are somewhat tippy. My suggestion...buy someting with a lower CoG. Besides, Sportsters really don’t retain the resale value that a big twin does...if you’re buying Harley.
In fact there’s an old joke in the Harley world that goes like this; “what’s the difference between Sportster and STD? You have a better chance of getting rid of an STD easier than a Sportster.”