In what appears to be a continuing trend, PC shipments are continuing to decline. These estimates are based upon desktop PCs, notebook PCs and ultramobile premium devices.

People are just not upgrading like they used to. In addition, that old PC I bought seven years back is still working really well. It used to be you'd upgrade because the PC would not have the hardware power required for the latest software. In addition, hard drives were never big enough.

Throw into the mix the continuing growth in mobile, and people are only upgrading when they really need to.

Worldwide PC shipments totaled 64.8 million units in the first quarter of 2016, a 9.6 percent decline from the first quarter of 2015, according to preliminary results by Gartner, Inc. This was the sixth consecutive quarter of PC shipment declines, and the first time since 2007 that shipment volume fell below 65 million units. Gartner: Worldwide PC Shipments Decline 9.6pct in Q1 2016 [gartner.com]

IDC: PC Shipments in 2015 Declined 10.6pct [webmasterworld.com]