Unless there is not a single person of the opposite gender (within a reasonable age range) looking to get married, it IS ALWAYS possible to get married.
Are we looking for possible, or are we looking for it to be a good idea?
Why within a reasonably age range? A 55 year old woman can’t marry a 20 year old man? Is it not possible?
And besides, it is not always even possible. You would need to find another nut who is willing to get married even though it is not a good idea.