stolen Roadmaster Granite Peak

Someone trespassed onto my carport on Nov 25th and stole my bicycle. My grandpa saw the person walking with it on his way home not realizing it was my bike. We drove around looking for the person but they were long gone. The only thing my grandpa gathered was that they were wearing white pants and a black hoodie, which is useless now after the fact. If anyone knows anything about this or sees my bike around or online please let me know. My bike has a specialty seat on it so it looks a little different. I thought about going to the cops but I didn't want to waste their time especially when I have nothing to give them. I've had this bike since I was 15 and it has immense sentimental value to me. It's a roadmaster granite peak 18 speed. This happened in the Fairgrounds area behind the highschool in Bremerton, WA.