The average length of history for all accounts is the 3rd most influential component of your rating (15 %). (growingfamilybenefits.com)
On top of that, try to stick with the same credit card accounts over time since length of history with a given card could be a helpful factor in credit score determination. (lendedu.com)
Still great but I primarily just keep the card for length of history. (moneybuffalo.com)