Yes, it bothers me. There are many cosmology mysteries that bother me, because a lack of answer means I can't answer philosophical questions that are important for me.

The existence of alien life is just another thing having philosophical implications for me.

We don't need to travel to other planets to discover alien life. Technology is already advanced enough to discover it. For example, the JWST can detect biosignatures. The HaBex can directly image exoplanets and their surface, so we can see if there are animals and vegetation.

I believe we are close to discover alien life if it exists. Technology is already advanced and is about to reach a tipping point. If the Artemis mission is successful, this will start another space race that will accelerate progress in space exploration.