These are some of the bowls I have made in the past for every day use. If the proper care is taken in washing, drying, and storing them after being used they should last you a life time.
Please be aware that I use Mahoney's Walnut oil for almost all my utility bowls. It is proclaimed to be food safe even for those who might have a nut allergy. Because the enzymes that cause the reaction are supposedly removed in the cooking process when it is made. Walnut oil has a semi gloss sheen when buffed. The higher gloss utility pieces have a Tung oil finish that has been used as a food safe finish when cured for over a thousand years.