The way things were done in the past have changed from what it is. In the area of buying and sell especially, you can stay in your house and do all your shopping all because of the availability of the internet. Before this time, the internet was majorly used for sending of email and other short and non elaborate internet activities but all that has changed to real marketing online.
This has changed the economic system in no small extent that people prefer not to go to the market physically but go stay back home and in there comfort do the buying and selling.
Is the internet making people lazy or what do you think?
I think this depends for the type of person. Some people with definitely become more lazy and do everything from home. But for others the weekly walk to the supermarket or other shops is mandatory. If I look at my grand mother, she knows all the employees there by name. For her it is not only about buying but also about communicating with people there. Even on the way she can look what the neighbors are doing. Probably a lot of elderly people feel similar about going shoping in person.