Hi there, Jenny, welcome to the boards. (I lived in Minneapolis for about six years and loved it -- say hi for me!)
You know, there truly is no "should" here, just like there isn't a should when it comes to how eating should feel, how taking a walk should feel, or how having a conversation should feel. Instead, what there is is a whole lot of diversity, not just from person to person, but even often for a given person from experience to experience, phase of life to phase of life.
That said, masturbation is generally (this is super-simplified) something people do from a place of curiosity, comfort-seeking, pleasure-seeking, or all of the above. So, when people feel like it's doing what they want from it, it's usually feeling like it's sating any or all of those things in some way; satisfying or answering curiosity in some way, providing some kind of comfort or pleasure.
Ultimately, all that matters with is, since it's a choice, is that it's something you want to be doing that feels in some way beneficial, or even just neutral -- rather than detrimental -- for you.
It might help to think and talk about what you're looking for in it right now?
Never doubt that a small group of thoughtful, committed citizens can change the world. Indeed, it is the only thing that ever has. - Margaret Mead