I don't think this posting will apply to young persons in school, or to persons taking a programmatic series of lessons. Probably it would apply more to older persons who have attained some competence on the piano, and just play for enjoyment. If you are being assigned a piece each week by your teacher, you probably do not have the freedom to explore very much.
Sometimes I do enjoy exploring the unknown, and I wonder if other persons on the forum do the same thing.
Do you ever take a collection of piano pieces that you have not heard and just sit down to play them?
For instance, Rachmaninoff's Opus 10 is a collection of shorter piano pieces, not terribly hard. There is a Nocturne, and Waltz, and a Humoresque, and others. Recently I just decided to sit down and play them. This Opus 10 is -- I believe -- a collection of Rachmaninoff's earlier compositions.
None of these pieces had I ever heard before deciding to learn to play them. Some I learned throughout, and some of the longer pieces, I just learned in part.
When I EXPLORE printed music for piano, I will not bother to spend any significant time on pieces unless -- [1] I like them, and [2] I believe I understand what is happening in them. Because I do take piano lessons, I can ask my teacher about techniques or effects that I don't understand.
This "exploring" has led me through several collections of MacDowell's pieces. I had never heard any of them played excepting perhaps for the "To a Wild Rose," which is one of my least favorites of his.
I have "explored" in books of Scriabin's material also, although most of it is rather too hard for me to play. Ditto for some of the less played compositions of Brahms and Schumann.