I believe at this point that this physical, random world is the only one there is and ever will be (unless the Muslims get a dirty bomb and destroy it one day which is a very faint possibility).
I don’t worry about the afterlife or about Moshiach anymore. No proof, no belief. However I also don’t care to argue with those who choose another belief so long as they do not harm me in the name of their belief.
And by harm, I mean Islamic terror, not putting up an eruv or running a shabbos siren or even practicing kiruv (just know that I no longer consider myself a Jew and when confronted by any attempt at kiruv I can now honestly state, sorry, I am not Jewish, have a great day).