Do you think time travel will be possible in the future?

There are mixed opinions about this matter. Some say it is possible, other say it isn’t.

The argument in favor for it suggests that with the advance of technology, people can do incredible things. Beside, scientists seem to have discovered that all periods of time are connected by some kind of very small “tunnels”, we only need to widen the tunnels to the size of human.
The argument against it states that time travel is next to impossible since it will be against the Quantum mechanics (I don’t know what Quantum mechanics is, but an easier explanation for it is that if a man travels to the past and kill his father, then he will not be born, and there will be no time travel thing. But the time travel does happen, so he cannot kill his father, meaning all the above-mentioned process is impossible to happen).

So what is your opinion?