The most ridiculous idea, on the contrary, If you believe in god it's advisable that you live your life as if there isn't any god, so you don't waste it! And who is that 'someone' to send him to the inquisiton!

I like this:

I think that if that means living a good life and treating others with kindness, compassion, and respect, then that's not a bad way to live.

Which god?

Bad idea, some of them are pretty fucked up.

impossible cause what is god, some many of them too!

Nonsense.

Even if your parents don't beat the crap out of you, you should live your life as though they do

I think that god is an irrelevance and have never believed that there is such an entity, How then can I start pretending that I think there is? I think that would be completely nonsensical, and it would mean that I would be pretending to believe something that I don’t. Can’t be done. Surely if there is a god, he wouldn’t be fooled by my pretence anyway!

Isn't a life based on reality better than one based on a fantasy?

I think it's cowardly AF.

Why is this advisable and what does it mean?

Complete BS.

I think that even if you believe in a big man that sits on the clouds, it's your responsibility to not be an asshole.

Why would it ever be advisable to live under a false assumption?

Nope, that's dumb. It's not that hard to be a good person.....

False.

How does one live as if there is a God? Without specifying a god, it has no meaning to live as if there is one. If you specify one, you really start running into trouble.

I differentiate between morality and religion. The two are separate things (in my life). I consider myself a moral person. I'm not perfect, but I try to obey the laws of the land -- don't agree with all, but I doubt everyone does. I would rather live in an ordered environment that a chaotic one (no laws or laws different in every place one travels). I've met many people of many faiths, who are moral folk, but don't believe in Christianity. Many Christians (and others) think morals are their domain and it is not.

The ruling ideas of a society are the rules of the ruling class. Karl Marx

Sounds like Pascal’s wager. This is a philosophical question, not religious. Bear in mind that Pascal is asking a philosophical question and it is necessary to understand the base upon which the question is being asked. If you look up Pascal’s Wager you will get a clear idea of what he is exploring.

IMHO, pure and unadulterated BULLSHIT. Live each day as if it were your last, be good to yourself, kind and considerate towards others, take from life and nature no more than you truly need and ALWAYS give more than you take, that's the motto I do my darnedest to abide by.

Total crap!

As an extra comment here.
If, as the o.p. states, " it is advisable to live your life as if there is a God" then logically it is also condoning, promoting and advising, etc, they we ALL should behave as would this Abrahamic God, i.e. decide to send forth a massive flood and wipe out every living person save a few, commit genocide on neighbouring peoples and nations, commit rape and pillage with immunity, capture, keep and breed and sell slaves, etc, etc, the list is almost endless so I won't bother even trying to write the whole thing.
But I will add this, NO thanks, I'll stay a decent, Heathen Atheist, a Humanitarian and Humanist, etc, rather than following in the footsteps of an Imaginary, Vile, Genocidal, Ego-centric, Psychopathic, Socio-pathic Dictatorial Tyrant.

Pascals wager.

That's horseshit. Easy one. Anything else?