it may be possible to hit a block(with a very low hash) now that the diff isn't rising too much, but don't expect the same thing if the price was climbing without rest
so hironically solo mining can have a point when bitcoin remain stable, still it's better to mine altcoin with the same hash, mre profit is awaiting you
People claim altcoins are more profitable, but it's because they leave out a major calculation: how much of those alts they could buy using Bitcoin.
For example, you can mine 0.01 BTC per day with your current rig. You can mine 10k of a coin that's worth 0.5 bits, but you theorize that they will be worth 2 bits next week (and very well might be). Your mining is now a choice of:
1) Mining 10k of that coin
or
2) Mining Bitcoin, converting to that alt, and having 20k of them
Now, when the value jumps from 0.5 bits to 2 bits next week, it's a matter of:
1) Having 0.02 BTC
or
2) Having 0.04 BTC
The second scenario, while it sounds like less in the beginning, just netted you a 100% higher return than if you had mined the alts.
This has been true with
every single altcoin over the past 2 years that I've followed them. I haven't found a single altcoin that was better off being mined instead of doing Bitcoin and just converting. Far too many people aren't paying attention to the economics, despite how basic the concept is.
That said, everyone's free to do what they want. If people want to continue devaluing themselves, that's their own choice. I can only educate people so much.