Are there any alternatives?

At this time, the only two viable alternatives are the Asus XG27UQ and the Acer Nitro XV273K, which both come in slightly cheaper. However, they’re not overclockable to 160 Hz, and instead limited to 144 Hz, and their overall look is a little tackier. Other than the stand, the LG 27GN950 looks simple, clean, and refined.

　　

How long will it last?

Although the IPS technology is showing its age with the low contrast ratio, the 4K 160 Hz panel means this monitor should last you quite a while, as it will take a few more years before GPUs are able to saturate its refresh rate.

　　The monitor should last as long as most monitors: a minimum of 5 years. LG only covers it with a 1-year warranty, though.

　　

Should I buy it?

Yes, if you need a monitor for both work and play, and it has to be 4K, the LG 27GN950 is a great option to consider.