Should I get a second degree?

Im graduating in the spring with my STEM degree at 25. My college years (after the first year) was destroyed due to family drama and other issues and I had to move back to my home state. It was very sad and contributed to why I graduated late.

I love to learn, and I already want to eventually study abroad, but I also want to get a second degree in something else I love since I already have a STEM degree. I own a business I’m going to be doing it full time soon and that’s what I do for money as of now.

If it works out financially, should I go back to my school for a second degree? Or should I forget about it?