@Isaiah Cuellar since you're pretty young, if I were in your shoes, I'd be more inclined to build up a portfolio of multiple properties instead of paying off one property fast.
The reason being: one property doesn't produce that much cashflow (even if it's paid off). Let's say you could snap your fingers and this property could be paid off today. What type of cashflow is that? $2k/mo? $3k/mo? ...even if it's $5-$6k/mo cashflow, to most people, that's not enough to hang their hat on for the rest of their lives (unless they're living a very conservative lifestyle).
Most people can't retire on the cashflow from one single fam property...but 4, 5, or 6 properties? Now you're talking.
Also, I think you have some assumptions that aren't entirely correct. First, you mentioned that you were concerned that a lender was telling you to pay off the mortgage so he could "make more interest" off you--think about that for a moment, and you'll realize it makes no sense. The faster you pay off that mortgage, the LESS interest the bank makes from you. Does that mean you should pay off the mortgage as fast as possible? Maybe, but maybe not (see below).
Another assumption I'd suggest re-evaluating: you seem concerned that if you have a 30 yr mortgage and you just let the tenant pay it off at the minimal rate, you'll have the mortgage until you're in your 50s. Maybe, but maybe not. A LOT will happen in 30 years, and if you stay focused on REI, you will likely be in a MUCH different position in 5, 10, 15, 20 years from now.
As the years pass, your financial picture will constantly change, and you will constantly re-evaluate your position, options, and goals. Maybe in 10 years, you decide to pay off that 30 yr mortgage in a lump sum. Maybe in 5 years you have a lot of equity, and you decide to do a cashout refi and use the money for other investments. Maybe in 15 years, you've improved the property and rents have increased so much that you can put that extra rent toward paying off the property faster. There are a million possible scenarios that could play out OTHER THAN just having your tenant make the minimum payments for 30 years. (And as others mentioned, just having the tenant make the minimum payments for 30 years isn't a bad option, either--someone else bought you a house!).
The problem is, you probably have relatively little understanding of all the possible scenarios that could play out over the next 5, 10, 15, 20, 30 years--because (I'm assuming), you haven't run many (or any) projection models.
My suggestion is to take a step back, and start running a LOT of projection models. Run projection models for 5, 10, and 15 years with various scenarios (like paying off the property, not paying off the property, acquiring more properties, raising rents at 2%, raising rents at 5%, using rent increases to pay off the mortgage at a snowballing rate, putting cashflow into CDs, putting cashflow into a DP for another property, remodeling the property to increase rents, renting the property by the room, adding tenant storage or other amenities to increase rents, building an ADU at the property, selling the property, STR'ing the property, etc., etc.). Run models that investigate every possible path you can imagine. Seriously, spend three months living, eating, breathing projection models--run projection models until you're running them in your sleep. I'm speaking from experience here: I run projection models almost daily, and over the years, it has made me (and saved me) a LOT of money. In fact, I'd go as far as saying that my net worth is probably double what it would have been thanks to everything I've learned from running countless projection models--without them, I'd be flying blind.
The purpose of running projection models is NOT to perfectly predict the future (nobody can do that). Instead, the purpose of the models is to give you a MUCH better understanding of your options, and what outcomes could occur given various events and decisions--this will give you a much better understanding of what path works best for you (and also which paths would not work well). Running the models will show you not just WHETHER paying off this property fast is the right/wrong move, but WHY it's the right/wrong move (which is critical).
Here's a post I wrote a while back about how to use projection models, and why they're such a critical tool for any real estate investor: https://www.biggerpockets.com/forums/48/topics/1164330-are-y...
Good luck out there!