It adds to the cohesive narrative which can make the overall story telling experience better. When works are considered canon, that’s usually an indicator that the overall franchise narrative is being cared for and thought of.
It can also mean that some aspects of one show can show up in another or vice versa. It’s very cool to see a character you really like. Show up in another medium.
I’ve never personally understood why people get so obsessed with which works of fiction are more real. It’s just a silly thing to worry about.
It adds to the cohesive narrative which can make the overall story telling experience better. When works are considered canon, that’s usually an indicator that the overall franchise narrative is being cared for and thought of.
It can also mean that some aspects of one show can show up in another or vice versa. It’s very cool to see a character you really like. Show up in another medium.