I've had a Verizon 4G LTE hotspot as my sole home internet for the last year. It is the only type of service available where I currently live.
It is expensive and unreliable.
I live in a rural area. I am using an external LTE antenna on the device. I can see that the LTE signal is moderate to good where I am; the problems I am having do not seem to be LTE signal related.
The device itself is about as reliable as other consumer level networking gear -- meaning you need to power cycle it now and then to make it start working again. It has a remote web admin interface, with no way to remotely reboot it. You have to physically touch the thing to power cycle it.
I don't know what's available where you are, but here, Verizon charges me for every byte that goes through that LTE connection, in both directions. I think they're overcharging me, but I have no realistic power to do anything about that, because they are Verizon and I am not. Overages are excessively expensive. My bill for last month was $250. We watch no streaming videos at my house -- not even youtube.
The device stops responding to pings from certain nodes on my internal network, causing all kinds of networking fun. DNS queries randomly fail during logical browsing sessions. I've investigated all of this thoroughly with tcpdump and other tools. This happens on clients of multiple types - OSX, WinRT, Windows, OpenBSD.
So near as I can tell, the box itself is just shit. There have been 2 or 3 firmware updates for it in the year that I've depended on it for my internet. None of them have improved the symptoms I describe.
It's a Pantech MHS291LVW
The entire time I've had it, I've been researching how to replace it with something that isn't Verizon. I'm nearly done with that plan; I'll be backhauling a nearby DSL service back to my site using a 3.5 mile p2p wireless link. I'm paying to upgrade the site infrastructure and wiring at both ends of the link. I am spending thousands of dollars to do this.
My neighbors also have Verizon LTE service. They have the VZN Home Broadband service, where Verizon will mount an antenna at your site and do the install themselves, and the CPE has 4 switched Ethernet ports in addition to WiFi. They haven't complained about the reliability as much, but the price is still too high.
You can only get that hardware from Verizon in my area if you agree to a 3 year contract. I didn't and won't ever agree to any contract with any US mobile operator, so, I couldn't get the VZN home broadband hardware, which may be more reliable than the Hotspot hardware.
They are not power users; they are a young family with ipads for their kids. They recently shared with me that they just had an $800 monthly bill.
If you have any wired broadband choice available to you, take it.