If guys started hiding their nips the way women did, do you think eventually women would get conditioned to be sexually aroused by male breasts? Why and why not?

10 year old fat me who was incredibly insescure about my boobs and nips would have prayed for dear life for this to be true..

Less than 100 years ago it was considered indecent exposure for men to expose their nipples in the US – so the answer to your question is: Yes there is no doubt exposed nipples were considered a sexual display.

https://www.bingedaily.in/article/men-legally-gained-the-rights-to-expose-their-nipples-in-1936

I think it’s more than social convention that causes arousal of breasts.

I think men are programmed that way because developed breasts are a sign of sexual maturity. It triggers our biology.

No, we would have better luck hiding our wealth and revealing it over time.

male nipples are already pretty sexy and very arounsing