I do still believe people should mine more at home. Did you guys read about the recent 'Compass Mining incident'? Users' gear was suddenly shut down and they had to sell their gear within 48 hours notice, because the company had issues with the Russian hosting provider. No chance of getting the gear home. I'm not against people building mining farms for themselves, but I'd try to have full control of my hardware at all times and not rent it to someone who might not let me have it back.
The problem with this is that a lot of people would rather take that risk, which to be honest isn't exactly common, than pay the increasingly higher electricity rates at home. I'm assuming you mean by home, actually in their house, or even if you're referring to mining within their own country, if you're in the West, then you're very likely paying more for your electricity than you would in the East. So, naturally there's a lot more incentive to have
off shore if you will, mining operations.
Even though
'off-shoring' is often cheaper, as I say you run the risk of losing (access to) very expensive hardware which should be seen as a cost (with a probability attached to it). Also if you use a miner as a 'stacking device', how I've seen it called, it's profitable even in very expensive countries; you're essentially buying Bitcoin at a discount, with a one-time investment of the mining hardware. If you try to break even, it's a lot harder, I agree.
Also, the other downside, and this only really applies to if you mean mining at their actual home is even the quietest miners, tend to make some sort of audible sound, which not everyone wants in their home. Then you have to think about the dynamics at home, the husband/wife might want to mine, but does their partner want the constant hum of the miners, and the wires sprawled everywhere. Its not like the West have better availability of clean energy, so it doesn't even work in that favour.
However, it's important that people do it, and every little bit of hashpower helps, so if someone is willing to splurge $200 on a Compac F or $600 on a 3TH/s Apollo, they can aid the network without a lot of noise and without spending too much money.
The way to go forward likely is creating their own energy, and then hooking the miners up to that. Although, that only appeals to a very select few, and probably more of the type that have hundreds of miners on the go, rather than just a hobbyist.
Honestly, many people today are already creating their own energy by putting solar cells on their roofs. Especially in expensive energy countries like in Europe, it is very interesting to get such an installation instead of buying power from the grid. I wouldn't be very surprised if we see completely integrated 'green' mining solutions for homeowners in the near future (hobbyists are already working on them as we speak), consisting of solar panels on the roof, using the miner's heat output to heat water for the house (needed winter & summer) and a way to put it outside or submerged to make it silent. The miner(s) could even help repay the solar installation faster, as you don't usually pull the whole power that it can theoretically provide, so part of the generated energy is lost if you're not mining. With a good OS, the power draw can be dynamically adjusted depending on the output of the solar array.