Isn't it unfair how God will send the Sentinelese to hell for never hearing about Christianity?

I think its equally appalling to believe in a God that would send a decent, loving person who happened to be Hindu, Pagan, agnostic, atheist, Native American spiritualist, etc... to hell for not accepting Christianity. These people all have strong reasons to them for what they believe or don't believe that are as real and valid and that there are certainly no less or more proof for. I could never call such a God a God of love.