The bit coin masses are still using more GPUs
https://itsblockchain.com/asic-vs-gpu/
October 13, 2017
Despite GPUs comparatively slower speed, they are highly sought after. Financial affordability is a direct factor for it, but indirect financial advantages are also high for them. GPUs have a big market, high resale value and a three-years warranty period. This makes using and reselling them more affordable. Programmers usually buy and use GPUs in the initial years to recover its cost and make profits, and before the guarantee period ends, they resell it. In contrast, ASICs only have a guarantee period of three months and have lower demand. GPUs have high demand due to their multi-purpose tasks. ASICs solely exist for Bitcoin and thus generates less demand and makes reselling difficult.
ASIC’s mining power usage is more than GPU, which makes mining via ASIC costly. ASIC miners are known to be notoriously noisy due to loud sounds produced by its fan. They create too much heat and require a cooling system. So, they are difficult to handle. More importantly, upgrading chips, which is essential to improve mining, is constantly getting difficult. While Graphic cards easily get updated, ASICs require a whole new computer to be upgraded, which is generally not feasible. In the worst case scenario, if the difficulty increases beyond a certain point, the ASICs completely become useless due to their single-dimensional usage.
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