I have been here 6 months, 90+ hubs and the new has not worn off. It is especially like that when you publish something new or when you have a popular hub that have been getting quite a lot of comments.
There are days when nothing seem to happen and the disappointment sink in and you check each of your hub stats to see if any one is reading your hub. You edit, add pictures, tweet and do everything in your power to get your hub noticed.
HP is like a drug, once you get a taste of it you can never go back.