I purchased an iPad and now I barely use my MacBook air. I still like it and everything, but I've found that most of the time it just sits at home collecting dust.
Not gonna sell it or anything because at some point I do occasionally do use it for remote desktop or other things that are impossible in the iPad, but for general, daily use my iPad has taken over.
Anybody else with a similar experience?
It's normal (in your case).
It's all about bringing your ICT needs in chart before buying the hardware.
Probably you are a "content user" (surf the web, watch some movies, email, some music, from time to time creating a little document and spreadsheet) instead of a "content creator" (programming, long documents, heavy spreadsheet usage, creating presentations, some photography)
in combination that you don't travel a lot for business (planes, trains, not so much automobiles

) will make that an iPad will cannabalize the 11" MBA for about 80 to 90% of the tasks.
While the 11" MBA falls through it's hardware configuration in the category of ultrabooks, in reality its 11" size places it in the category of netbooks.
Where it's the most robust, powerfull and beatifull...and expensive.
The primairly tasks of a netbook are the same as an iPad, the secundary tasks of a netbook are the same ones as the ultrabooks.
The reason why ultrabook tasks are considered secundary on a netbook is because of the size of netbooks, which makes "content creation" hard if it's for several hours a day.
The benefit of netbooks over tablets is in its durability when you do a lot of traveling. It can take a lot more of punishment when it's in your handluggage, normal luggage or backpack compared to an iPad.
I would suggest that when you get a new MBA later, you should look at the 13" model (or maybe by then at the 15" one) and you will see that your usage between iPad and MBA will balance more out compared to iPad and 11" MBA.
I've got the problem that my iPhone, iMac and company car cannabilize my iPad usage.
Now that I don't use the train anymore I can't watch movies when travelling to work. At work I have my iPhone and my MBP, at home I have my iMac.
Doesn't mean that my iPad became useless, I still use it from time to time, but more in the weekend nowadays.