How conservative the Japanese people really is? And the government?

They don’t have the value that “guys must be macho.”

In the old era, gay relationships were very common and were even praised among the privileged social classes, such as Samurai and monks.

This is a very vague question. But considering the asker’s comment on Mr. Nakajima’s answer, your interest seems to be in sex-related matters (I don’t think it’s the only indicator of conservative/ progressive, though).

How did it feel when experiencing gay sex for the first?

They don’t have the so-called “couple culture” seen in many Western countries.

How do you see these below?

Visual-kei

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They were very similar to the bromance of today but accompanied by sexual intercourse.

They don’t bring around their mates everywhere, which means they don’t worry about being single, gay, or whatever because no one cares about whom others are having/ not having sex with.

I’ve heard it’s always the male side that is expected to take a move in some countries. It’s not the case in Japan.

Is it possible for creatures with intelligence more advanced than humans to evolve naturally in the universe?

“None of my business” is the common attitude.

Yaoi

We don’t instantly tie it with sex when a father and his very young daughter are taking a bath together.

What is the difference between heaven and heavens?

It’s very common for a girl/ woman to ask a boy/ man to be her boyfriend.

Moreover, buff guys are often avoided for their narcissism.

I sometimes feel people from the West are obsessed with those “gender” and “sex” things too much. Let’s think about something else sometimes. It’s unhealthy.

Why do some people never get to on a date even though they wanted to? Are they just too ugly and weird for everybody?

They don’t tease or beat up cross-dressed people on the road.