Yeah I have female friends because I'm still relatively young and in college. We're not close like my dude friends because we talk about different shyt but I would consider myself friends. Having female friends come in very handy as wing women and can be a VERY powerful tool to get chicks in a bar. Don't sleep.
You can have female friends without it being sexual, you just gotta be upfront about what each other wants and honest from the get go. I'm NOT married obviously so it would be difference once I graduate college, grow older, get engaged and start settling down.
If one of the people had alterior motives then it falls apart when it starts to get deeper.
Like for example, I sometimes had chicks think I wanted to hook up with them and it got awkward as fukk until I stopped hanging out with them because they were desperate as fukk and all over me.
There were times where it was the exact opposite and the girl stopped fukking with me because I caught feelings and she didn't feel the same way.
I'd imagine if you're one of those dog type nikkas that sleeps with every woman that moves then obviously opposite sex friendship won't even be an option. I don't think your problem is female friendship at that point, I think your problem would be maturity then.
If you're still in your late 20s/early 30s and still dogging girls out then you obviously need to get your shyt together and get some fukking class and grow the hell up.