I mean, from searching flights, to where to go, what to do, what hotels, what time of year, prices etc etc?
Or can you not be arsed, you leave it to the missus/mate/travel agent/same places you know and trust etc?
I enjoy it, I like looking at the reviews, trying to work out what's best, looking at what I can do, when is best for our needs, dates, working it all out, best VFM prices I can get etc.