Why year? I get 1$ every 10 day from one desktop with equihash

That's possible, but AFAIK, the discussion is about mining bitcoin using a desktop PC (which is close to impossible). Equihash means you're mining altcoins, which is fine to, but such discussions belong in the altcoin mining subforum.
Yeah that's right. In my view mining is quite possible with desktop but the miner won't be benefitted much. Altcoin mining through desktop seems more profitable, so it's good to mine with the specific equipment that are available for mining purpose.