[TremendousJudge]

Roads make driving more convenient at the expense of other transportation methods; being able to walk to the store is more convenient that driving there. You can't do it though if there's this huge highway in the way and your city is so low density that the store is miles away.

If this argument doesn't convince you, think also that driving may be convenient, but I find more convenient if we lived in a planet that's not a literal oven

[jimmaswell]

I wouldn't find walking to a store more convenient than driving unless the walk to the store was less than the walk from the parking lot at a store I'd drive to.

[TremendousJudge]

even if it takes less time? for driving you have to get to the car, drive, deal with traffic, park, and so on

[jimmaswell]

Driving for 10 minutes is generally more appealing to me than 5 minutes of walking carrying bags, but it depends on the situation. I bike a few minutes to a nearby McDondalds sometimes but then often drive that same distance.