Personally, I think everything is as deterministic as it gets[1]. We are following physical and universal[2] rules. We are thinking thoughts which are 'set down in stone' according to the natural progression of input and output of our sensory system, which is obeying the physical laws of the universe to the letter, and there's no way we wouldn't say and do what we say and do, any more than a planet will not continue to orbit in the way that it orbits as long as the gravitational and physical influences upon it do not force it to orbit / de-orbit / fall apart in the way that it would be expected to orbit / de-orbit / fall apart.
Which is not to say I'd lay down and die because of the futility of actually trying to do something, because my particulary cause-effect 'light cone' of influence and outcome is not that kind of thing. But then I would say that, wouldn't I. For it is destined. It may not be predictable (at least by ourselves, being within the system) but the outcome is still inevitable, and free will (even consciousness itself) is an illusion, and merely a product or irreproducibly chaotic so-called-'randomness' that isn't actually random.
[1] How much this is, is arguable, but I'd opt for 100% as a reasonable approximation.
[2] "Universal" rules may include obscure equation terms that mean that matter and energy behaves in particular ways either side of an event horizon, in differing degrees of accelerating/rotating frames of reference, within or without various strengths of electric/magnetic fields, in volumes of space flooded or otherwise with exotic fundemental particle, etc. But of course we're only familiar with a small subset of conditions, so can only theorise rather specific so-called-universal laws for some circumstance, which may be substantially incorrect when applied to other environments. What I'm trying to say here is that just as Newton's Laws Of Motion seem to go wrong when Relativity comes about, and singularities cause Problems with the mathematics of the universe, and Heisenburg limitations of resolving completeness of information at a certain level of detail makes it impossible to accurately investigate the quantum realm of particle/anti-particle pairs from a macroscopic viewpoint, it can be deterministic without being predictable.