I've always used toe clips. "If it aint broke, don't fix it!" Never had a reason to consider a change. Same thing with padded cycling shorts. Never had a problem in the area, so never saw a reason to buy them.

Toe clips represent a major and significant increase in safety and efficiency on any bike, for any rider. The benefits of a clipless system over clips & straps are marginal at best. One benefit often quoted is the ability to pull back on the pedal on the bottom of the cycle without pulling out of the clips. Again, if you're not wailing so hard on the pedals that this is an issue that's loosing you points or risking an accident, why change? Beware of marketing driven, consumerist peer pressure.