Plenty of reasons why having a car is more convenient. I bike all the time, love biking, but I also have young children. So biking them to daycare and home with 2 working parents would add a significant amount of time to daily commutes given the good daycares aren't located near my wife's office. Plus I mountain bike as well as riding the greenway/gravel biking. So a car is a convenient way to get to the trails. Other options are to ride 8-10 miles each way on the greenway on a mountain bike, then actually mountain bike 10-15 miles or I guess you could be even more of a BA and somehow strap my mountain bike to my road bike via trailer drag it there, lock all that up, mountain bike and then drag it back. But even doing that would limit the trails I could ride to the one's within a 10-15 mile radius, which is just not fun :) I guess the way I see it is if your life simply revolves around work, and a small local community then it would be relatively easy to go car less in many places, but there are plenty of reasons people would prefer to have cars other than "laziness". I met up with friends at a brewery Saturday that was about 9 miles away and I biked to that, I probably average about 100-150 miles a month across greenway riding and mountain biking, so I wouldn't call myself lazy, lol. So two decent reasons IMO are hobbies that would require you to go more than 10-15 miles away from your home/office and kids. Even as they get older they have friends that live in other parts of town, sports, activities, etc. If you've managed to find a home that's within 10 miles of everything your kids will ever want to do you've hit the jackpot.