Just keep in mind that most times you’re listening only to a single element when you do that, and NOT how it will sound in the final mix through those monitors
with all the other elements that have yet to be recorded (and 'cuz you haven't gotten to the final mix yet).
That approach is more critical if you are tracking an entire band at the same time, because you are then in fact building your mix to a great degree on the spot, while tracking…and you can do that because you are hearing ALL the elements at once and how they interact.
With single tracking...building a mix on track at a time...the most you can do is get stuff in what you
think is the best ballpark of where you want your mix to sorta’ end up. You can spend 2 hours moving a mic around ¼” this way, that way for something…then when you start to mix…that “perfect” track just isn’t gelling with all the other “perfect” tracks…
…and then you end up EQ’ing and processing them to make the mix work.
But yeah, it’s good to do that so you get familiar with how the sound changes with various mic positions…and then after awhile, you’ll start simply placing the mic where you know it works for you ‘cuz you’ve heard it before.
And yeah…monitors are better than headphones for final decision making…but sometimes when you’re auditioning a single source, headphones can help you focus in on the sound, especially if you’re listening for specific things/issues.
Often it’s best to start by placing you ears where you think the mike should go…and then listen…though be careful with loud sounds!