The lure of an expedition to the highest point on the planet is understandable. Sadly, gone are the days when you underwent some sort of 'apprenticeship' in the Alps and/or the Andes, prior to going to Nepal. An acquaintance called me up a few years ago. He had paid for and was about to go on a commercial expedition to Gasherbrum I and he wanted to know how to tie on. I was utterly gobsmacked that this man, who labelled himself as a 'mountaineer', did not even know how to tie on to his harness! He showed up at my house with said harness, still in its plastic bag and unused; we unpacked it and I showed him how to put it on and adjust it and then, how to tie on to a rope. In the event, he didn't summit on Gasherbrum - an attack of diarrhoea on the trip meant that he lost so much weight that he didn't have the reserves for the climb itself.
My point is that commercial expedition companies are providing those with the wherewithal to embark on serious and hazardous adventures. The companies are following the commercial imperative to make money; some will also do works to improve the lot of the local people but, ultimately, the fees paid go into the pockets of the Nepalese government. The income is valuable and so the government is happy to issue permits to all and sundry, irrespective of the experience and abilities of the climbing team attempting the hill. So, in a culture that is keen to attach blame when things go wrong, who do we blame: the Nepalese government for issuing too many permits or the commercial companies for taking hopelessly inexperienced climbers on to an objectively dangerous hill?
As for the rubbish, it is simple: you brought it in, you carry it out. The ambition there is not to deprive the local population of a (pretty revolting, menial) job but to show respect to the peerlessly beautiful and very fragile mountain environment which you, as a climber, have enjoyed during your stay. It is an embarrassing and repellent reflection on contemporary, largely Western society that they are not generous enough to tote out their own trash from their camps on the hill and base camp. Although getting it back to home country would be the ideal, even ferrying it down and out of the mountainous area would be a step in the right direction.
With the number of people now attempting Everest increasing, we are likely to hear of more accidents and fatalities. But these can happen anywhere: recently, a twenty-something British climber was killed on the Hornli Ridge on the Matterhorn. He was hit by a block, dislodged by another climber, and fell 300 metres to his death. It will not be long before careless footwork on mountains in the Greater Ranges starts to cause more and similar accidents and the cause will be the burgeoning number of people, endeavouring to complete their tick-lists.
Personally, I have never had any desire to attempt Everest or even go near it; my own interests, after 25 Alpine seasons and 4 bigger expeditions to the Pamirs, Tien Shan and Andes, lie with Kanchenjunga and/or Dhaulagiri... And, if I ever get the chance to attempt either, I will make it a point of principle to remove the rubbish I generate on the trip.