If your legs aren't long enough to make the first step, you have to pull yourself up into the cab with your arms. This is especially difficult if you're trying to carry anything with you. With a truck bar offering an extra step, it's no trouble getting in with a bag of groceries.
In rain and sleet your grip is less secure, making you more likely to slip when clambering up into a high truck cab. A truck bar's footing helps you and your passengers get inside and dry without any problems.
Kids love to ride in a pickup truck, but they'll need help to climb onto a seat that's above their heads. Truck bars make it easier for your children to ride along with you.
Step bars make any pickup more convenient and accessible. See this site for more about truck step bars in Murrieta.