After 26 years of owning my old truck, I don't worry about it anymore. I've done everything I can to make sure it keeps running and driving, I now worry about other drivers and the stupid things they keep doing.
You will get used to the noisy, and if out in the country, you may get used to the dead animal smell in the ditches, that one still gets me!
Having three point seat belts helps me feel better about being on the road, I wouldn't even go around the block with out a seat belt these days.
Just keep driving, you will get more at ease and the truck will let you know if something isn't right.
