Sure, it's bad that fees are high, but high fees are not going to kill Bitcoin, because they are driven by open market, they are not installed by one side only like it happens in some centralized systems.
But centralization can kill Bitcoin, you can't undo the damage of big blocks if the blockchain became bloated past certain point.
Of courde high fees can't kill bitcoin, it even didn't affect it overally but don't you hear words from people who says so high fees make it useless to make transaction? Bitcoin is decentralyzed for me, safest option and great currency. These high fees does shit job, I can't receive transaction quickly without ultra high fees. And yes, some people prefer high fees and spammed network because they use it for theirself. Block size must be increased and I think currently even 4MB will be absolutely enough.
Can the block size be increased using merely a soft fork? Because hardforks these days are just becoming useless and as they create an alter chain most of the people are reluctant to move on. Increasing block size will surely cater most of the needs of our present time and 4MB would cater need of a pretty long time.