It depends on your motivation. I originally got my license to help me scout out my first 2 family home for myself. I wanted to look at everything and take my time and get full access to the MLS. A few months after I got my license my then girlfriend (now wife) and I were able to capitalize on that dream (it was 2008, so we didn't have competition like buyers do now).
I didn't do much with the license for a few years, but I made sure to get daily emails for several neighborhoods from the MLS and I got really good at quickly evaluating deals. I would note certain properties and guess if they would fly off the market or would sit and rot, and I got pretty good at it. But I didn't have access to financing and hadn't discovered BP and had to sit and watch as great deals all around me went to other people. I was also running my own single rental property and giving advice to friends who were interested in buying.
When the tide started to turn in 2012 I was the knowledgeable one in my peer group. I was licensed, had my own rental, had done renovations on my own property, and knew the market. I was hardly an expert, but I was way ahead of everyone else.
I purposefully don't beg my friends for their business. I tell everyone that their friendship is worth more to me than a commission, and I mean it. But I have worked with about a dozen friends over the last few years and converted about 2/3 of them to sales. I have learned who to say yes to and who to gently steer away. Added up, it's probably close to $100k in commission income spread out over the last 7 years. Nice side money, but not getting rich off it.
Being an agent also helped me get into my second 2 family a few years ago, and to sell that first property just a few weeks ago.
Being an agent part time works for me because I use it to further my own goals. I would never want to do it every weekend, though. It will burn you out in a hurry. It's a super demanding job that requires you to be available all the time and is really hard to balance with another day job. You can waste months working with the wrong buyer or seller. You rarely get paychecks, and when you do your brokerage takes a huge cut.
I say you go for it. The classes are not that bad and the test is also not bad. You'll learn a ton working with people and looking at properties, even if you never make a sale. And if you decide you hate it, you've only invested a little bit of time and very little money. But figure out what it is you want out of the license early on. If your goal is to get rich, you are unlikely to do it. There are a handful of top agents and a huge number who never go anywhere. Then there are people like me who use it as part of my broader strategy and intentionally limit our activity.