Hi and welcome to AA!
I don't see why anyone shouldn't be able to start their very own saltwater aquarium so long as they are prepared for a certain amount of commitment and research.
The key here is the research. If you've kept fish before you'll know they need attention. They can't be forgotten about or neglected.
That being said if you're prepared for a little work and commitment then why not go ahead and start your own saltwater tank! Just take it slow and don't be too ambitious to start with. Get to know the species and the different species needs.
Always remember we are all here to give help and advice so don't be afraid to ask. And ask before you make a difficult decision not after!
Best of luck 😊
Current tank 260g FOWLR.
Fish: Moorish Idol, Powder Blue Tang, Hippo Tang, J Emperor Angel, 3 Chromis, 2 Black & White Clowns, Yellow Tang,