I don't have any preference. I don't fall in love with genders or sexual orientations, I fall in love with people. If I am able to connect with another human being deeply and in a meaningful way, and if I am comfortable with how that person defines him/herself as a human being (and vice versa), then I am going to be attracted to that person on every level and wish to pursue a romantic relationship with him/her.
They fuck well and have less emotional attachment to their sexual partner.
Possibly for you and according to your experiences, but as a generalisation, I respectfully disagree.
I have worked and interacted with bisexual men from around the globe for almost four years. The one thing that has surprisingly stood out to me is the way that bisexual behaviour and experiences vary geographically. For example, I have found that bi men in the US (and please note that this is a generalisation although I acknowledge that not all bi men experience their sexuality like this) are put off and oftentimes repulsed by the idea of kissing, being physically affectionate with or establishing an emotional attachment with other men. At the same token, bi men in SA generally have an entirely different approach: they find kissing another guy hot, they are physically affectionate (they want to caress, hug, cuddle etc.) and there tends to be a leaning towards developing an emotional attachment i.e. even if they are married, there's the tendency to lean towards more of a friends with benefits setup where the friendship and emotional closeness are of just as much importance as the sexual element.
With masculinity aside, I think bi guys would prefer other bi guys (especially married ones) for the "discretion" part. A married bi guy would be less like to tattle on another bi guy if they are both married (and not out to their wives).
I dunno about this. I think that once again this has a lot to do with geographic placement. For some weird reason bisexuality isn't as much of a hidden reality in this country (SA). In the instances where the guy is married, then there is the tendency to be closeted about it (although most guys don't have a problem with leaning towards a gay guy for a hook up etc.) but when a guy is a single...lets just say that I've come across quite a number of single guys that are openly bi.
I am openly bisexual. My family know that I am bisexual and they've all been supportive and perfectly okay with it (the shocking thing is that my 76 year old Mom totally understood what bisexuality is about, when I came out to her)...and they've met guys that I've dated. My friends know and they've been just as accepting and supportive of me...a couple of my straight male friends have even made the observation that they like that I'm bi because it's made our friendship much deeper - we can share about deeper more emotional stuff. And the same can be said professionally. Everyone at work knows that I'm bi. In terms of my straight male colleagues, they kinda dig it cos it allows me to still be part of the boys when ogling women. There is no attempt or need for myself or anyone at work to hide my sexual orientation, even from clients.
I think that a lot of this stems from something that I became fully aware of when was with my ex bf (he initially identified as gay until I came along, then he acknowledged to me that he finds women somewhat attractive and was curious about having sex with one...and he now identifies as being bisexual). What I was made aware of is that when one is at peace with being gay or bi and approaches it as being a run-of-the-mill norm, then people tend to respond accordingly as well. We experienced it in so many ways when we were together...e.g. on one occasion we went out for dinner at a restaurant and since we would caress each others' arms etc., it was obvious that we were a couple. A couple at the table beside us finished before us and when they were leaving, they came up to us and said that we made a beautiful couple. On another occasion, we went to a bar in a rural part of the country (known to be homophobic) but the response was for people around us to ask if we were together, then ask us about being bi (we told them about our orientation too) and they then bought us a bottle of wine to accompany our dinner. If you're okay with who you are and you approach it outwardly as well, then people are kinda forced to respond in that manner as well, otherwise they will be the odd one out and end up looking like there is something wrong with them.
Just my 2 c