Should this not apply to males as well? For example, if Christians are enjoying a swim, shouldn't the men wear modest clothing that covers up any muscles, that stirs lust in the hearts of women and maybe even other males struggling with celibacy? Why don't we hear Christians talking about this?
You're right, men must also be considerate of their sisters in Christ. Back in the old days men would wear swimsuits, in our current society it's now trunks. There are Christian men however who do wear shirts when they go swimming, it does go both ways. I am not entirely sure on the topic myself, swimming is a tricky one, as baggy clothing is going to hinder you.
We don't hear about it much on the men side for two reasons I will put forward.
1) Men in general struggle more with lust than women do. This is not a denial that women struggle with lust, of course many do, but from both biological evidence and actual surveys men do seem to have to deal with it more. (This is not a valid reason for men to dress immodestly).
2) Men do not dress in the same way that women do. If the majority of men regularly wore short short shorts on a summer's day I would be surprised if the Christian community did not have a similar reaction. The only occasion is really with swimming where men don't wear much, or a hot summer's day. I would say to the latter that a man should dress modestly.
I do agree that many if not most Christians are more shocked by a woman dressing immodestly than a man, and really it should go both ways. There are just practical reasons for this though, men don't have the problem of cleavage or the general trend for women to wear more form-hugging bottoms as opposed to men.
This apply to men as well? Wear humble, inexpensive, non-flashy clothing? No expensive wrist watches, shoes or suits? No form fitting pants or shirts?
I would agree with dressing modestly. On the expensive clothing, there is also the idea of wearing your "Sunday best". If it is done out of true intention to glorify God, that is more than acceptable, it is much more of a heart issue, whether you want to honour God or honour yourself.
Should you refrain from having a glass of wine because a fellow Christian is an alcoholic? And is that equivalent to waving a beer bottle in their face? Seems hyperbolic to me.
If a fellow Christian is an alcoholic then yes I would refrain from drinking in front of them.
He also said that rich believers invited to posh Corinthian dinner parties could eat meat consecrated to idols. Say, how far should this be taken? What if married Christians having sex causes celibate Christians to "weaken" as you say? Shouldn't they be willing to abstain from sex and expressions of intimacy?
Paul also said that if it would cause a brother to stumble, one should not eat meat consecrated to idols.
On married Christians, well they shouldn't be having sex in front of anyone.
In front of a Christian who is celibate yes one must be considerate and understand the things that person is struggling with, there isn't any need for some overt expression of intimacy in front of them.
Guess the "sisters in Christ" aren't worthy of this consideration. And for some reason, you assume that women who are wearing clothing you deem "provocative" are doing it with an intent to provoke sexual lust in the hearts of men, Christian or otherwise. I think that's unlikely.
The sisters in Christ are worthy of this consideration, you're right.
And I haven't assumed that, I am questioning as to why they would want to. Perhaps it is not specifically to provoke lust (though sometimes it may be), but many do do it for attention.