I believe in more training especially toward the solo diver. I do not personally have a permanent dive buddy. So far I've been able to find one where ever I am diving but I expect that will not always be the case. Should I not dive because I can't find a buddy on those occasions? I would rather be well trained to dive on my own than to miss the opportunity to dive. Just my humble opinion.
Solo diving has a greater level of risk (in most circumstances) than when diving with a buddy. Part of this risk may be mitigated by redundancy. I wouldn't recommend you start to dive solo, without redundant air and you should be completely familiar with this equipment. Additional training would also be advised.
Every individual has to accept the level of risk that they are comfortable in taking while diving. No one can tell you what that is. Hopefully you will lower this risk through proper equipment, training and planning.