I wonder if anyone else besides me also noticed a pattern in the sense that tops and bottoms have different reasons behind why they desire intimate connections with guys.

On one hand, there are bisexual bottoms who only date guys because they desire to be penetrated by guys.

That first type of bisexual bottoms tend to commonly end up committed to heterosexual monogamous intimate relationships if they are women.

On another hand, there also are bisexual tops who only date guys because they instead ignore the genitals the guys have.

That second type of bisexual tops also tend to commonly end up committed to heterosexual monogamous intimate relationships if they are guys.

Personal preferences also may change as we experience more things with age.

I first realized I was bi after desiring intimately women with socioculturally considered more masculine gendered expressions who appeared to be guys for a big chunk of my life then finding out in my late teen years that guys were also an available possible dating option ever since I began to simply ignore if they have a pole because nearly everyone has a back hole.

My personal preferences related to sexual desires also have been dismantled towards apathetic indifference lately in my adult life before taking antidepressants became a part of my life as well.

TL;DR: Desiring a certain genital and ignoring a certain genital are two but not all of the possible reasons behind why someone is bi.