For most people, I would say probably not! Saltwater tanks take a lot of time. You’ll need to be actively spending time with it for at least 2-3 hours a week, spread unevenly throughout. Some weeks will require even more time in order to perform needed maintenance.
Aquariums require a lot of equipment, which means a lot of money, but it also means that you need to be comfortable maintaining it. The maintenance isn’t generally complicated, just taking stuff apart to clean, and then putting it back together. It is, however, time-consuming and frequently gross. You’ll be scraping slimy algae off, algae which strongly adheres to stuff, even algae that encrusts and requires a razor to remove. I, personally, haven’t found these daily/weekly/monthly tasks to be “work”. Rather, they are just part of the experience.
It’s very important to have a lot of patience too. Keeping an aquarium is like having a garden, but you also need to make the soil. When you’re first setting up you’re looking at a couple months before you can add fish safely. This period does give you an opportunity to learn how comfortable you are doing some of the basic tasks. If you can’t check the chemistry a couple times a week at this stage, you might have trouble checking it once it’s really important.
Fish, corals and the myriad invertebrates you’ll end up having are animals! You’ve created a small version of their ecosystem somewhere that it shouldn’t be and put them in it. Treat them with due respect and not just as things. This means making sure that the water chemistry is stable and within their, quite narrow, required parameters. Think of the chemistry being off in terms of what it would be like for you. The very air(water) they breathe is getting increasingly toxic and unpleasant for them to stay in. All they can do about it is to try to get away. The only way of accomplishing that is out the top, and fish don’t survive very well on the floor.
However! If you have a love of coral reefs, colorful fish, and the experience of cultivating an alien garden, this might be for you! You’ll get to appreciate a slice of an ecosystem that you would never experience otherwise! You’ll learn that fish have their own personalities! You’ll find out that when a nature documentary is talking about a fish, they’re, to some degree, talking about that individual fish, not all fish of that species! Many traits are general, but temperament and food preferences are not. You’ll end up with fish, which aren’t supposed to be jerks, pestering any invertebrate it can find. You’ll have omnivores who refuse to eat shrimp, and herbivores who love it. You’ll get to see miniature dramas play out constantly, some fast moving, some very slow.
Ultimately you’re going to be taking a big, somewhat life-changing, chance and there is probably no way to know if it’ll be the right choice. If it is, the reward is immense. You can do it. I believe in you.