What kind of monster would send someone to eternal fire for any reason, let alone for using their brain. You have strange gods.
Look in the mirror. You're the one damning yourself to hell--He's giving you the opportunity to escape.
No, not at all. A loving God, who wishes and hopes for every man and woman to embrace ultimate good, is forced to reject those who have rejected forcefully and unrepentantly such an invitation. Unrepentant murderers of men, women and children, unrepentant child molesters, unrepentant ruiners of peoples' lives (i.e., evil people) get thrown into eternal fire not because God has forced them to go. Rather, it is because they have put themselves there of their own free will. God (for Christians and Jews, anyway), wants very badly not to have people reject total goodness, and offers any person who has committed atrocious acts a path back to goodness (through forgiveness and redemption). Those who go to hell have turned their back on goodness. That is not God's doing.
One who desires justice such as we will never know on this earth,
who desires acknowledgement of him as father and creator (he has placed it in all mens hearts to know him, it takes work over years to deny him),
and one who used his "brain" to create all, including all the science you will ever know over a lifetime. We cannot ever expect to know fully the mind of God, we are but men...
God doesn't "send" anyone anywhere they haven't already chosen to go.
You have strange gods.
You have a strange notion of the Christian God.