How can we not see that the choice of companions is not an indispensable condition for choosing a destination?
It's the cheapest version of the trip, where you manage with what you have, not what you wish for.
In Morocco, if your budget is limited or your friends are not available, you won't miss a trip because of that; you go alone, and the destination adapts to your reality, not an imaginary group.
The choice of companions is a variable, not an intrinsic decisive factor in the process itself, unless you have the means to make it so.
A business trip to Casablanca, for example, doesn't depend on who accompanies you, but on the necessity.