I see nothing wrong with solo diving, provided it is conducted upon solid foundations of appropriate experience, training and equipment. In contrast, when it becomes an option for convenience alone, without those solid foundations, it can be nothing more than an invitation to prove Darwin's Law.
Substantial experience is crucial when making the decision to solo dive. It not only enlightens the diver on the hazards, but also educates them truthfully on their capacity to cope with those hazards. It is for that reason we see many more "should I solo dive?" questions from novice divers, than from advanced/experienced. Those that know the answer make their decision and get on with it. Those who feel the need for external 'approval' or 'validation' probably cannot.
Solo training is quite accessible nowadays. Do the training, understand the issues, learn your capabilities... then make your decision. Otherwise, just spend a little more time and effort locating appropriate dive buddies... they're around, if you network and ask.