I have toured with aerobars for 11 years, and would find it difficult to be without them. In fact, aerobars saved my touring career. In the early-1990s I developed repetitive strain injuries (from overusing computer keyboards and excessive musical instrument use). As a result, some of my muscles fatigue very quickly; my ability to grip handlebars for long periods has been especially compromised — probably permanently. For several years I was only able to take short trips; but as soon as I installed aerobars, I was able to resume long-distance touring. Aerobars gave me a new and efficient riding position, and a way to rest my hands. They are also great for climbing and riding into headwinds.
Aerobars definitely attract attention on a touring bicycle. The middle cow in this photograph was very intrigued!
Alan