The concierges make you feel that you have a butler or a local host who in many times can make your travel headaches and worries disappear. Once you are a SE, concierge services and top priority seat upgrading are the two privilege that you enjoy most. You do not have to exercise it, but when in need, you are happy that it is there for you to use.
When you are Elite, lounge access is No.1 benefit you may enjoy, but once you are SE, this benefit is moved over to become No.3.