I have not owned a working computer or laptop in about 3-4 years, I have one that I use for work but I do not "own" it and only use it for "work" purposes not for personal use as its pretty locked down. As for word processing, my family owns like 3 tablets now, all of them contain Microsoft Word, Excel and Powerpoint, theyre free from the app store. when ever I have an important document I need to open and print and I do not have a computer I have always been able to open it on my $100 tablet, make whatever changes I need, save it, and print it to my printer via Google Cloud Printing, it prints beautifully onto my printer, and best of all, no computer was used in the process, unless you consider a tablet a computer, some of them are ya but mine is just a simple android tablet. works great.
Yes printers are becoming obsolete, but they are still needed for A) Printing Bank related documents, B) for School registration applications C) for Passport or Visa or Travel documents D) income tax documents, E) other misc documents that must be mailed