Thankfully, my Win '98 machine (built ca. 1999-2000) is still working with both 3.5" and 5.25" disk drives. Up until my "Dul*" Win 10 computer, all either were built with at least a 3.5" drive, or had one added. (Such as an eMachine T5010.) Unfortunately, "new'" computers (and new motherboards) no longer even have a floppy interface, so require use of a USB external 3.5" drive. (Now, if only someone would make an external USB 5.25" drive...) But I have become curious of late. Many of our older ( 8088, 80286, 80386, 80486, even K6-2) machines seem to work quite well after 20 years or more (sometimes MUCH longer) but one of the "Tech guru's" at a PC specialty site says that computers with processors such as the i3, i5, or i7 will last about 5 years (on average.) Does that refer to the longevity of the processors, or simply that such computers themselves may be "obsolete" due to technology advances, or changes in hardware and/or software?