People get tired of constantly trying for someone who doesn’t do the same. People get tired of dealing with bullshit. People get tired of waiting on something that will probably not happen. People just get tired in general.
Not literally every minute, but throughout the day. Just having someone there being able to take you away from your boredom or to occupy you when you’re bored, or to just simply talk to you about how your day went. It’s comforting to know that someone genuinely wants and likes to talk to you.