Is it not right to think their are intelligent life in other planets? why do some people cosider it haram?

it's not haram to think that,I do believe that their are aliens. God can do anything, he created billions and billions of planets, and hundreds of millions of those planet have air, some have water, other's have both air, water, and warmth, and there is a 50% chance that their is life on many of those planets. and demons could travel to space to try to get to heaven and spy on the angels, who knows maybe some demons had left earth and lived on different planet.