I bought an entry level turbo before Christmas out of desperation. Some things I have learned:
1 - That using a turbo after graduating to road riding is much easier; as a mountain biker I used to hate it and found even 30 minutes difficult. As a roadie I find it easier, I spin more smoothly, it's almost enjoyable and I find I have the mental discipline to do it for an hour.
2 - That un-clamping from the trainer after an hour and going for a quick pootle up the road feels weird and that the hill I must climb from my house is easier with warmed up muscles and that my "standard" turbo HR of 140 is the same HR as when I'm climbing the hill, i.e. a comfortable working HR.