I would do it. It gives you freedom to choose your niche and not be tied down to it.

If my name was available I would buy it. The reason is it is mine. I may not have a plan for it right away, but I would buy it and keep it until I figure out what to do with it.

I would do the same for each of my family members. Unfortunately, someone else owns all of our names and I no longer have control of that info. So, I would buy the domains with my name just to have them, and buy a separate relevant niche domain that would make sense to your readers.

I hope that answers your question.

Thanks,
GlennDubs