If every death was not a tragedy, but a part of God's plan, what makes you value life? And if the only reason you're good is to get into heaven, is that even being good? The only way to truly be good is to know you won't be rewarded.
The fact that life is a one-time deal, and not forever, makes it valuable. If you only have one chance and a time limit, aren't you going to try to spend it wisely?
Who wants to live forever?
Because there is anti-evidence, you can't say religion is a lie. That would be like me saying you don't exist because you're not standing in front of me. Not being in front of me may be evidence, but it doesn't exclude your existence.
Also, being good doesn't get you into heaven.
Fun-fact: You cannot disprove the existence of something, such as god or santa claus.
If good doesn't get you into heaven, then hell is full. Stop being so arrogant as to think your religion is better than all others, as it offers "eternal life" if they accept it. That mindset only causes hatred, and has created war. I'm agnostic. I have ONE life. ONE. If there's an afterlife, so be it. I'll be good to my peers, I'll not harm people, I won't rape and pillage or murder. I don't need some stupid-ass ancient book to tell me how to define my own moral code, or a fear-mongering church to scare me into it. I'll be a good person, and I'll worry about Heaven and Hell when I'm dead.