Well, there is no such thing as a digital 35mm. You either get a digital or film camera. There are full frame digital cameras that give the quality of 35mm but they are professional cameras and high dollar. Not to be nit-picky. I wish they could combine 35mm and digital. It would make a hell of a camera. Like someone else advised, you can use editing software to add a vintage look or a film grain to your image, depending on which you were really leaning toward.
You can get a 35mm for much less than the same quality digital camera by the way. It will probably cost about half as much to get the 35mm version of a digital camera.
There are three main downsides to using 35mm. It costs much more ($15-20 per roll once you add the cost of the roll of film, processing costs and a picture cd) to shoot a roll of film than it costs to print the same number of digital prints (less than $2 from my current lab). And you can't see what your pictures look like until you get them back after processing and cannot just take a picture and post it online. And, for someone who is used to digital, there is no live view screen with 35mm. I am not trying to talk you out of a 35mm, but just be aware of these things.