When we sold our first house in less than a week, we were in a crunch to find a new place. It was a pretty hot market in our price range, so two houses we offered on fell through.
In two weeks, we went to 44 houses. Most we walked in and had to force ourselves to even consider them. Those two had felt workable, but we weren't heartbroken.
We walked into our current house and our realtor met us at the door really excited. She said "I found your house!" and she was right. Even with this house, it was missing a pantry and a 4th bedroom, it was smaller than we wanted, and it was too close to the neighbor's house. Other than that, it met our list.
If you are finding all the houses great, it probably means you're fortunate to be looking in a price range where your wants and needs are both met by many that you look at. Check that it meets your "list," pleases you esthetically, and is in a neighborhood you like - then go for it!
Our list was... 2000+ sq ft., trees, nice yard, kitchen with dishwasher and eating bar, pantry, master bedroom and bath slightly separate from other bedrooms, 2 car garage, linen closet, close to move in ready, and a fireplace.
Our list doesn't seem extreme, but not a single house we offered on had all of it. The thing all three had it common was that they were clean and just felt like they'd be workable in our life. As others have said, the "feel" is important, but be wary about expecting that feel to hit you in the face.