One good thing about a PhD is you get several years to explore a topic of interest to you in great depth. (As long has you have a decently good advisor.) Another good thing about a research PhD is that in addition to getting experience publishing papers, you go through the process of writing a book sized thesis, which is valuable experience in a lot of ways - skills transfer to publishing and reporting in any field.
On an intellectually superficial but economically important level, another good thing about a PhD is that people who have advanced degrees earn on average 50% more than (1.5x) people without advanced degrees. This is in the US at least, according to data published by the US Fed.