A lot of the negatives that you "hear" about granite are simply not true. Some of the negatives that ARE true are the following:
-Some stones that are sold as "granite" (but are not actually geologically granite) need to be sealed. There are many stone countertops that do not require sealing and if you find a knowledgable dealer they should be able to tell you which is which. In general lighter colored granites need to be sealed more often than darker colored granites.
-Granite is hard. It sounds stupid and obvious but granite IS a very hard material. If you drop a plate or glass on it, you can say goodbye to that plate or glass... sometimes laminate and corian can be more forgiving. Some people don't care for the clanking noises that things make when you put them down on granite. You will have the same problem with engineered quartz products.
-Granite is cold. If you put hot dishes or mugs of coffee down on them, they will cool down pretty quickly. You'll have the same problems with engineered quartz countertops.
As far as I can tell, along with the expense, those are pretty much the only downsides to granite. Some people also complain about the seams in granite (vs. corian which is seamless) but if you go with a good installer, the seams will not be noticible.
The benefits of granite are many. It's beautiful. The price has come down quite a bit in recent years making it more accessible to people who are not quite so rich and famous. It's one of the must durable things out there and will last forever. You can place hot things on there without worrying about whether you are going to ruin your countertop... in fact, with the exception of dropping a bowling ball on it where there already happens to be a hairline crack, granite countertops will be virtually indestructable. Some quartz products are not quite as resistant to heat, but in general quarts products and granite have most of the same upsides and downsides, it's generally just a matter of which look you prefer (they are also priced comparably).
If you love the look of granite, go for it! I don't think you will regret it.