I'm probably one of those people that will likely coax you into adopting a pet over buying one.
But a word of caution when adopting never F*ken let a volunteer workers guilt trip you into adopting a pet that you are unsure you want to keep. Never let them pick one out for you unless you are willing to deal with the unpleasant surprises later.
My first pet I adopted I picked her out. She was bright, healthy, calm, clean and to this day she still hops around like a young rabbit even though she is close to being 10-11 years old.
My second rabbit I was guilt tripped into adopting was an overweight bunny with some stress and eating issues and a mistrust for humans. It took me a good 4-5months to get him over the stress and mistrust of humans. I even got him to lose a bit of weight...but his eating habit I could not fix. After 4 years he passed due to digestive complications. (First experience losing a pet - devastating.)
If you plan on adopting make sure you do your research and have a list of questions ready about the animal you're deciding on adopting. If you ever decide to return the animal, then return it and dont feel guilty about it. (Hey at least you tried)
Now if adopting isn't your thing cause you don't want to wait for the right breed then don't feel bad about buying from a breeder or pet shop. It's your money and your choice. Be absolutely sure before getting one because you don't want your pet to become a shelter pet...and we all know what happens to em when they stay too long at the shelter.
So, whether you adopt or buy just remember that owning a pet is a big responsibility and that you are adding a perminant family member into your group.