In relation to time, I do believe time exists, and I agree it is endless and beyond the scope of the conditions set upon it by a clock. I believe time is the cycles of existence, and they do exist, they move, they change, like a flower opening, unfolding. The universe is not static, it is a flowing, growing, movement of energy, and that is time. It is the cycles of the planet revolving around the sun, and considering the universe is very mathematically complex and is the universal language, the cycles can be measured and segmented yes. However, time is also subjective of course as many are aware, it seems to speed up at times and slow down at others according to one's awareness. But the cycles, the movements of the universe can not be denied. We see the sun rise and fall approximately 365 times as we travel around the sun millions of miles.
This is why long distances are measurement in light years, because time, speed and distance are an interrelated dimension of the manifested universe which can be measured with relativity.
Interestingly I had a discussion with someone about how fast the earth was moving relative to distance over time. We calculated it travels through space approximately 9 miles per second. That's quite fast according to our perceptions of travelling time.