Step-In bindings do not give you back two extra hours of riding each day as some marketing materials seem to suggest, but there is something psychologically uplifting about cleanly stepping in and gliding away as you reach the top of a lift. It just feels good.
Interruptions are unpleasant while engaged in euphoric activity.
Step-in bindings have undeniably improved in recent years and even strap bindings are being updated and improved in subtle ways on a yearly basis. Although there are some trade offs, at this point I doubt the average rider will notice any significant riding disadvantages by choosing a modern step-in binding over straps. The main advantage of strap bindings is the freedom they give you to choose from dozens of different boot models. Most step-in bindings demand that you choose boots from a selection that is specifically designed for that particular interface. Some riders may also find the mandatory ski boot like stiffness in step-in boot soles to be objectionable.