Do most men pay all the household bills in a relationship?

Back in the day maybe, but nowadays it's usually 50/50 or 60/40, when men use to pay for everything women didn't complained about backing it up often. 

No, in this day and age that is almost impossible. Bills, mortgage/rent is very expensive depending on where you live. Not  to mention necessities like food, clothes and if there are kids involved that’s probably just as much, if not more than a mortgage. Unless you’ve found a very selfless millionaire, I don’t think one income is enough to run a house hold

When i was married i paid a portion of the bills. Not 1/2 because my husband made more money than i did.  There's not rule that says a man is "supposed to pay all the bills"..... every couple needs to have a conversation about finances before they  move in together or before they are married.  Along with this conversation, there are other things which need to be discussed, as well. 

I've never wanted to be financially dependent on a guy. To me, it seems very normal to financially participate in my life and be responsible for my own foundation. In my marriage, we're both all in all the time. THAT seems normal. 

If he does, he has a high paying job. Today it takes 2 working to pay bills.

There is no such thing as "supposed to" this is not 1950

Yes some women choose to be homemakers. yes some men pay all the bills. that is between each individual couple. there is no "supposed to"

No idea, I do now but my wife actually does the taxes. I used to do the taxes, rather my accountant did. But when I got audited back when certain people were being targeted by the IRS, my account bailed.  Why back when my wife and I were first together, she took over all the bills, all the money. Suggested as a trust exercise by the marriage counselor.  So basically, we have alternated who does what over the thirty years together, almost 30 married. No biggie, as long as they get paid, who cares.

When my wife and I got married, we put both our combined pay into a single checking account, and bills came out of that account.  In 21 years of marriage, we have never once fought about money.   But from what I understand, we are rather unusual in that regards,

Others I know will split the bills 50/50.  Or, split the bills proportional to each partner's income.  So if one partner earns 65% of the household income and the other makes 35%, the first partner pays 65% of the bills.  So in the case of the woman desiring to be a housewife, the husband would naturally pay 100% of the bills.

The 50/50 split is a good way to motivate each partner to advance as far as they can in their chosen careers.  The proportional split is good if there is a huge discrepancy in incomes (like if one is a nuclear engineer and the other is an elementary school teacher, their incomes are never going to be close to each other but that doesn't invalidate each's chosen profession).  The shared account is good for couples who really really really get along (financially that is)The biggest thing to do is find something that is not going to lead to arguments and resentment toward the other partner.

It depends on whether you are in a partnership situation or a kept woman situation. Naturally the power dynamics of the one are quite different from those of the other. In either situation it's a good idea to be financially and emotionally prepared for the situation to end, prepared to be abruptly dumped, prepared to leave.