Ugh, I currently have 3 bikes (ss, road, and hardtail 29er)
My parents thought that was getting execissve right before I moved out, I'm in a tiny flat now where I can only sensibly store one bike, so I have the road with me, but I miss the ss for kicking about the city in, and the mountain for the trails, as there are a few near where I live now. And to make it worse, my closest friend who has always been a bmx rider, has finally bought a proper sized bike, albeit an urban dirtjump bike (we both live in the city now) and I'm having to resist urges to buy one so I can muck around with him. But I don't have the space for it. And I'm saving for a guitar not for a bike. And I hate being someone that enjoys consumables.
This is all the internets fault.
But on the other hand, I will have a collection of bikes when I have more space, and money.
My girlfriend doesn't bat an eyelid that I have 3 bikes, but she generally thinks I'm mad anyway...
On the ss vs gears front, I'm a rake of a lad, 5 foot 9, and 58kg. my ss is running a 52:18 gear, and while it does ride very nicely, I find my self spinning very quickly on flats, and I can easily spin it out on any hills, moderate hills I can keep pace on, and steep hills are a bit of a PITA, acceleration is not something I'm good at, I'm light, but I don't have a lot of power to lay down, so my first 2 strokes on the ss are pretty slow, then I can get it spinning well.
On my road bike, I tend to us a fairly similar gear to the ss most of the time, I'm not someone that likes flicking around gears too much, but I will change up for slight downhills so as not to spin out, and I'll change chainrings for very steep hills. It doesn't always feel as fast being on a road bike, because the pedal feel is a little slacker and mushy feeling from the longer chain and indirect chain line, I still go faster overall on the road bike, even though is has 25mm tires, which feel waaay worse than the 23's on the ss. I love the ss, I love the simplicity, I love the way it looks, but after riding it for a few weeks, I look at my road bike and remember laying down those longer rides I used to do. that being said, I find the best way personally to keep pace is to pick a cruising speed for the ride, and ensure I never drop below it. that's how I enjoy pushing myself to keep a pace up.