LACK of evidence is not proof of an afterlife.
LACK of evidence is not proof of bigfoot.
LACK of evidence is not proof of space aliens.
LACK of evidence is not proof of a teapot in solar orbit between Earth and Mars.
In order to justifiably BELIEVE something, you must have Quantifiable positive evidence or a logically rigorous proof.
Otherwise your OPINIONS are INDISTINGUISHABLE from pure fantasy.