speed is where it's at.
i can't say i've gone as fast as you guys, though. maybe i'm just a wiener and can't pump it? i think i've hit a max of a little over 60km/h. not too many hills 'round where i live, and the ones that ARE around me and relatively short... so it's hard to build up the speed. i haven't tried this season to break any top speed records, though.
i find riding fast is what makes road riding exciting! i'm comfortable with speed until i'm going over 55km/h, and then i start to focus in a little more. if i'm wearing my spandex, i'm comfortable around 60km/h too (i just find that with street clothes, that when the wind hits you, it knocks the bajeezus out of you!).
Try mountain biking... i think that might be why i'm comfortable with the speeds. i find it a lot more intense doing 35 through a tight single track with trees on either side than doing 60 on an open road.