I think mining will eventually be something that someone will do for the fun of it and to occasionally get lucky, I think yes, certainly solo mining is more advantageous for the network but a lot of people who are mining are purely in it for the money so they won't do it and scream at anyone who does. It does concern me sometimes how centralised Bitcoin is becoming in some areas, it certainly doesn't help as well that people on this forum insist on trolling anyone who asks for help with tech stuff regarding solo mining.
Well I've certainly never "trolled" anyone for asking for help on solo mining. There are plenty of guides on how to do it. The real issue is, if we get every casual new miner only solo mining at this level of network difficulty, the vast majority will just give up after 6 months, having spent a lot on electricity and not earned a single cent. Those with enough hashpower to mine solo can't do it by default very easily either. The more miners bitcoin has, the better it is for bitcoin, so we need incentive for every single miner to join and stay on. Solo mining, unfortunately, does not provide that incentive, but pooled mining does. The network does not lend itself to a system of only solo miners - especially in this ASIC dominated world that bitcoin is becoming. I had high hopes for p2pool to fill that niche in the middle, but it has yet to scale to the new magnitude and hardware either. Thus we are left with pooled mining as the next best option. I have, however, suggested on a number of occasions that there is definitely room for more pools than currently exist. However, the barrier for entry to become a successful pool is currently massive, and the stakes are very high with an awful lot of money at stake.
People have argued for a micropayment type system instead of the big block every 10 minute idea that bitcoin has, but we would lose a lot of the security and gain a lot of the problems with frequent forks and orphans inherent in such a system. I lament the difficulty that there is inherent in many casual miners just joining bitcoin, but remember, this is part experiment as well as revolution, and the actual long term solutions are evolving around the system.