Let's not be silly. Existing LTE phones on Verizon get a real-world top performance in the 20Mbps range. Now, that's great and all, but no one will ever get even 50% of what's basically the signaling rate of 73Mbps.
Also, your download patterns are unlikely to change a lot. It'll still be email, web surfing and some youtube. LTE makes netflix possible while not on wifi, but that's about the most data-hungry thing an average user is going to do. For the most part the only thing this changes is that things like installing apps when off wifi are much faster.