Let's look at the facts:
1. Hercules first appeared in the pages of "Thor" in 1965.
2. Since 1965, Hercules has been known for his numerous affairs with beautiful women.
3. Also since 1965, Hercules has been shown as the kind of character who isn't shy about his emotions (or lust).
4. While the character was dead, there was a hint that the character had a sexual encounter with gay hero Northstar in 2010. This was a comment made by She-Hulk.
5. Since that reference in 2010, Hercules has continued to show interest only in women.
I think we can all agree that the Marvel Comics version of Hercules has been clearly established as a straight hero. I get that you feel like Marvel has taken away something from the character. I feel like you've invested a lot in a character because of his sexual identity and based most of this on a reference made in one comic that could have been just a joke by She-Hulk, or it could be that this was just one writer trying to change a character and then the other folks at Marvel looked at it afterward and said "Hey wait a minute...you can't do that!"
If Hercules being bisexual became official, Marvel would have changed 50 years of comic book history in order to stay true to one reference made by another character that could have been a joke.
Now that Hercules being straight is official, Marvel has stayed true to 50 years of comic book history and has dismissed only one line of dialogue.
I don't see a problem with that.