cause we dont see ourself becoming any less-hindu, if we attend church or sikh gurudwaras.
That is so odd. I am not trying to be critical but why would somebody attend a house of worship of a completely different religion? Jews are not allowed to set foot in the sanctuary of another religion. Christians can if they do not take part in any actual worship but generally we wouldn't want to.
There is no restriction for common Hindus for occasionally praying in other religious places, only thing is that those places should not be anti-national, anti-social or utterly inimical.
I had occasionally prayed in Church at the sad occasions of death of my friend's relatives or during HX-mas functions on behalf of my school. Visiting and saluting at Sikh Gurudwara is rare but absolutely without any problem. If muslamics would not have been muslamics, then I could have visited many mosques as well.
In spite of all the problems in the world, most Hindus when passing in front of their temples, or churches or mosques or even muslamic shrines bow their heads intrinsically for a moment in front of them as they associate all of them with the same Hashem. I remember I too was doing it even when I was a rational atheist for long time. No amount of rationality could change it.
Among the Hindus only the orthodox seers and practicing priests may have hesitations and restrictions for visiting the Churches and mosques. Moreover some other orthodox Hindu people may not like it visiting to other religious places and may like to take a bath afterwards mixed with Ganga water.