It's not a waste when we know for a fact that we won't be spending eternity separated form God, and the central figure of our faith is God's only son who sacrificed himself so that we wouldn't have to be separated from him for all eternity.
Yeah, but this kind of troll is fun. Hey @johndoe --don't tell people stuff is in The Bible when you can't cite chapter and verse where a person can find it. You're just making shit up. Parts of The Bible were written in the 2nd century, like Revelation--so much for your false claim about the 1st century.
As a Christian, I would say there is some truth to this. But it is only human to focus on the end of life, since death is unavoidable. Indeed, every philosophy and religion must grapple with the inevitable.
But death can also give meaning to life for knowing that the latter must end, we should do everything in our power to make that life worth living. Paul, for example, believed that his life had meaning while he served Christ and his fellow believers and also that his death had meaning because he could depart to be with Christ.
And in light of that, this meme would have been just as accurate if it had relayed that Christianity is a life cult because we also believe that to live is Christ and that his life has given us life now and forever.
You have misrepresented the equation (if it can be reduced to a mathematical formula, though that would reductionistic). Losing your life = finding it or simply living in the ultimate sense. And note that the opposite is death. Jesus is saying that those who seek for life in this life end up embracing death. That is why he taught so much about wealth and food, security, relationships etc. Everything you do and are is swallowed up in death. There is only one way to live forever and that is in Christ himself and by following him. Life.
I can read what Jesus says without intervention, thank you very much, and directly following him is not an option because he's physically not here to follow, rendering everybody else an intermediary intervener. Besides, he taught a lot of contradictory things but keep in mind that no scripture in the NT was written sooner than one generation after his ascention. You're certainly within your rights to interpret what any of those words mean to you but there are as many different interpretations of his words as there are Christian denominations. We don't have one singular denomination with one clear reading, do we. Oh, they all claim to be the true denomination but that and a quarter won't even get you a cup of coffee.
That last supper jazz about drinking blood and eating flesh is just flat out barbaric ritual cannibalism, and here you're trying to tell me it's all about life. Hard pass.