Isn't a seat as wide as a couch kinda hard to handle? Or is it literally as comfortable as a couch?

As for your questions, you'll get as many answers as there are participants here, and some of those with multiple responses. Some will be adamantly pro-road bike (drops, "clipless" pedals that you clip in and out of, etc); some will favor hybrids; some will suggest mountain bikes in some variation or another. Many of us have a stable of bikes.

My choice: The Black Pearl, a Trek Allant diamond frame ("men's" bike; as opposed to a step-through frame or "women's" bike) commuter, a totally upright ride with platform pedals, front and rear racks, and seldom seen without panniers.

But I also have Radagast the Beige-and-Black, a Giant Cypress WSD (step-through frame), which is a comfort hybrid. And Orion, a Bianchi Premio, a diamond-frame road bike converted to an upright position. Both of these have handlebar bags, platform pedals, rear racks, and are also seldom ridden without panniers.