Let's put this into perspective...the 3.5mm jack was developed when? I'm guessing at the beginning of the last century. And you don't think that 100 year is long enough to consider a replacement? So you want Apple to stick to 19th century technology that was developed before people were born who have already died of old age? Wow, if we were stuck to that logic, we would never have seen HDMI or any new connectors. 4K screens would be unachievable.
Remember the massive tears about the Apple lightning cable switch from the old adapters. People survived, life went on, and during that time, Samsung changed their connectors and nobody said a word, there were no tears about it, life didn't stop. And looking back, I'm sure 95% of people will agree that the new connectors weren't as big as people made them out to be.
Honestly, 6 pairs of headphones? And you use them all with your phone? And people here are saying "Apple is not environmentally friendly" when you have people who feel they need 6 sets of headphones to survive? Talk about first world problems.
It's really not that hard. Let's wait and see what Apple do. They may phase out the connector over 3 years or a couple of generations of phones, we don't know, but I really think that people are making a mountain out of a molehill in this case.