Last I heard, the universe will continue to expand forever. Suns will die and their remains will make new suns. But not all of the matter is re-used. Eventually there will not be enough matter to fuel new suns. The last star will die. The particles of matter will continue to expand with the universe, but there will be no energy. The universe will be without form, and void.
Life is a fascinating thing. Ignoring how the universe came to be, it’s amazing that we are all made of, as Carl Sagan put it, ‘star stuff’. We are born of long-dead suns. Somehow, this ‘star stuff’ combined to make life. Maybe we’re alone in the universe, and maybe we’re not; but I think that the universe might be filled with life. (Which is not to say I believe in ‘UFOs’, as the term is commonly used.) There may be other life in our own solar system. Perhaps on Titan?
But IIRC, Titan is slowly spiraling into Saturn. If I do remember correctly, then any living thing on that moon will be destroyed in a few billion years. The Sun will grow to encompas the Earth’s orbit, destroying all life on the planet. And these things will be repeated all over the universe.
Kinda sad, innit?