As I have already mentioned, Vienna has a fairly well developed bike share programme: Citybike. And as I have already mentioned, I do not use it. Partly the reasons for that are practical.
For a tourist who wants to explore the center of Vienna by bicycle, Citybike is great. It also works for locals who both live and work in the city center. Sadly, I work in an area of Vienna that is not covered by the Citybike network and there are no stations near my office. In order to commute to work and back, I would have to rent the bicycle for the entire day, which would be financially prohibitive: The rental costs are calculated on a sliding scale, where the first hour is free, but the second hour is 1 Euro, and subsequent hours are priced increasingly higher. According to this scale, it would cost me 30 Euro per day to commute to work and back - which would of course be madness.
Even to go for a short recreational ride before or after work is not an option, because the bike's basket does not accommodate my work bag.
This is the bag I carry to work when I am in Europe. It contains my laptop and the documents I need for the day. As you can see, it does not fit in the basket - and since it's a one-shoulder bag, cycling with it in traffic is not something I want to do. This bag goes with me to official meetings, and switching to a messenger-style bag would not be appropriate in my line of work. I think that any city implementing a bike share programme must take this factor into consideration. In my view, it is a design flaw when professionals are unable to use the bicycles because the basket will not accommodate a standard laptop-sized bag. As you can see below, there is no rear rack either.
For those who want to cycle in the center of Vienna as tourists, the Citybikes are certainly well fitted for this purpose: step-through frames with adjustable saddle height; swept-back handlebars for an upright sitting position, dressguards, a chainguard,
fenders and mudflaps,
a wide saddle with springs that is probably fine on short rides,
and the newer Citybikes have 3 speeds, which is sufficient for the central (non-hilly) parts of Vienna.
An additional reason I do not rent Citybikes is that, frankly, I do not wish to turn myself into a mobile billboard. In the photo above, you can see the juxtaposition of the Citybike moto "Vienna for free!" (this refers to the first hour of rental being free of charge - though there is still an initiation fee of 1 Euro) and the yellow adverts for Raiffeisen Bank, as well as the white and red adverts for Gewista (a local advertising agency). Personally, I would rather pay a small fee for the first hour of rental, than advertise for a company I have no connection to - though I understand that others might be perfectly fine with this practice. In the meantime, I will continue to support local bike shops by renting from them whenever I need a bike in Vienna.