Even though I wouldn't want to die anytime soon, I wouldn't want to live
forever - at least not as I currently understand life. Living a thousand or perhaps a million years, fine. But when contemplating the idea of living more than, say, a G64 number of years (G64 being Graham's number) the idea sounds horrific to me. Especially if it would turn out that after a certain amount of time there would be nothing new to experience anymore, nothing to learn anymore.
Not having enough time to learn everything there is to learn, experience everything there is to experience is what makes the time we
do have precious. I think it's that thought Picard wants to convey.
So yes, I can live with those quotes