I usually buy a lot of goods by online nowadays.

It is a variety of kind that I have purchased, as like clothes and books and shoes and etc. = I've purchased some stuffs like clothes, books, shoes, etc.

The reason that I use on line for purchasing is as the following. =  There are reasons why I consider online shopping.

At first, Online shopping is really convenient for purchasing stuffs. = First, online shopping provides convenient purchasing to buyers.

Second, I can buy something that can't get domestic market. = Second, I can buy something that isn't available in the supermarket. 

Third, sometimes online shopping is cheaper than off-line.

But on the contrary, It has a danger that I'll commit impulse buying. = But on the contrary, it is sometimes irresistible! I might commit impulse buying.

So, It seem to be better that a using of Online shopping is done slowly. = That's why I see the advantage of being wise and responsible when purchasing online.

Comment:

~ Keep up the good work Jae-Beom. Never stop until you reach your greatest potential. Study hard! :)