Indeed, though we have used other filesharing services in the past and have suffered from issue with regard to accessing each other's files, delays in them becoming available etc. The advantages of sharepoint seemed to outweigh the disadvantages, and, to be fair, so far, it's worked well, with far more flexibility.
No system is foolproof, and we have lost one person's work for one day in seven years, so touch wood, not a disastrous record - but today it is very annoying.