Think then if you were an animal, what would you be? Your other goal though is to be memorable and unique you want this person to find you again and you don't want to be 'Carl200123014' when the last message they got was from 'Carol23123'.
This makes you uninteresting, unimaginative, and suggests you didn't put much time or thought into your creation.
It invites cases of mistaken identity and worst of all it tells them how long you've been on the site and after a while this starts to become embarrassing if you've not had any luck.
One of the very best things about the internet is that it allows us to remain anonymous to be anywhere in the world and to say and do things with no repercussions.
We don't use our real names, and we don't need to give away any other personal details, and this all means that we can have debates in chat rooms and pledge our allegiance to various causes without ever needing to suffer the consequences.