Regarding the genie lamp...if you wind up just blowing LTHP because you ran out of things to buy, the money thing can get really really out of hand.
Between professions, bringing in spouses, and those darn things, my family is currently sitting at over nine million simoleans. The only source of income at the moment are the money trees (which only bring a measly 40k for 100 bags), property/buildings, and generation 8's profession. And some of generation 7's, if I need to clear space.
I feel compelled to spend that money, and I...just...can't.
Also, if you need something to do later on in the generations, you can start working on collections. The bug collection is missing one bug from China, but I'm not risking 20 minute loading times just to go get it. Mounted fish collection is complete. Gem collection is in progress. Gnome collection is missing Troglodyte (but I got 2 Blingaboos). Metal collection is missing two, again I don't want to travel just to get them. Spirit collection is missing one, but I'm just lazy like that.
You'll hit ruts. This is inevitable. Just keep plugging away. It'll pass.
Oh, and final one. Don't be me and ramble late at night after a marathon session.