Was Tolkein a fatalist?

[Sauron 666]

I ask this question due to the fact that in Tolkein's works the word 'doom'is seemingly synomous with 'fate', giving off a feeling that one's fate or destiny is negative, and indeed in many of his tales there is joy and there is also hardship and sadness. (of course this is true of life in general). That connetation seems to something Hemmingway would've done. Another element which gives me this impression is when Gandalf states that Bilbo was 'meant' (intended) to 'find' the ring, therefore that Bilbo wasn't in charge of his destiny. I know this in particular has a very strong christian connetation to it but it seems to fit in well with what i would call (hesitantly) Tolkein's fatalism. I'm just looking for other peoples' opinion on this.