I have an ambivalent relationship with bicycle gadgetry. I've used cycling computers practically from the day I (re-)started cycling as an adult in 2009, but I've spent months at a time without any, and haven't had one on my main commuting bike for several years. I log a general estimate of commuting miles on the mycyclinglog website but am not really interested in any other data coming out of my daily commute.
On my 'good bike', however, I've always been interested in how far and fast I go -- though I am by means speedy nor am I what is known amongst audaxers as a 'Mileater'*. Nonetheless, the 'best bike' gets the best miles and I do like to know what I've been doing, in concrete as well as visceral terms.
The first few years, I used Cateye cyclo-computers. My first two computers (on the Brompton M3L) were wireless but found they sometimes fail to record what you're doing but likewise sometimes pick up interference from nearby devices, so just weren't reliable enough. I switched to wired versions and ran those on the Cross Check and Pacer quite happily.