Time for a timing belt replacement?

[racer43]

I'm the original owner of a 2002 WRX wagon. The timing belt and water pump were replaced in 2013 at 90k miles. He told me the old belt looked practically new. I retired in 2010 and have been doing about 4k miles a year with it and total miles is now 142k. With only 52k miles but 12 years on the belt would you replace it? Subaru says change every 105k miles or 10 years. I'm assuming it's an interference motor. Thanks.