when the weather is good, few of us will do a lunch ride. Short, intense and sweet. Good 10 min warm up then throttle it up and kill it until we get back.
If you still feel you don't get a work out in an hour on the road, I'd highly suggest getting a MTB. MTB is more like unpredictable intervals to clean short steep step u/hills. You will gain power climbing, but if too much can lose top end on the road. They go hand in hand if you know how to mix them and maximize your time pedaling.
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Rule #10 // It never gets easier, you just go faster.