It doesn't take a rocket scientist--or someone with a doctorate in literature--to ascertain the conclusion that the majority of books written are in past tense. And if it feels natural to do so, just do it.
But there's a few writers out there who tackle the present tense. And yours truly is one of them.
From as far back as I can remember, I've written in present tense. To me, I view my writing as a portal to another age or land, and I'm bringing you on this journey. Present tense feels natural to me, despite the countless books I've read that are in past tense.
A friend of mine described his writing of the past tense as telling a story over a campfire: "Long ago, in a far away land, there lived a princess . . ."
I'm just giving you something to think about. I'm not trying to be clever by writing in present tense. I just write what feels natural to me. A few stories I've written are in past tense, and those stories felt right in that tense too.
Experiment, if you wish.
(As a side note, there is also the future tense, but primarily those are reserved for build-your-own adventure stories and such. I've never read a future tense story - I'm sure there's one out there)