The love at the beginning of the relationship doesn't last very long. You need something a bit more than that to sustain a relationship long term, if you haven't got anything in common at this stage and have loads of arguments it's going to be an uphill struggle. I suppose you have to ask yourself - do you think he is worth it?
I think it depends. DH is very different to me; he was raised in an entirely different sort of family set-up and our views differ in many ways. Politically we differ a great deal (though he's softening and leaning further left as he ages and the children wear him down) and in our work/careers we're very different (he runs a company, I teach, he's very black and white while I look for the grey areas and give the benefit of the doubt).
However, we both have similar parenting styles, moral codes and expectations of one another. We're both honest, straightforward and good to each other. We also don't argue regularly. If we did, I'd have thought twice before marrying him because the occasional argument is fine but constant ones are soul-destroying.
I'm not being flippant when I say that Brexit has put a considerable strain on our relationship. The disagreements have unearthed some fairly fundamental differences in our views on a range of related subjects which, only now and many years into the relationship, seem much more important. It has genuinely made me think about our compatibility.
I knew i was going to marry DH because not only do I love him, but we share the same major life goals. We don't agree on everything but we agree on the big things (where to live, children, education of said children, money).
My husband and I often have different opinions - politely we're very different although he's begging to see things my way. We don't argue about such things, a good debate, yes, but not arguing. I love a good debate!
No. disagreements and arguments early on can sometimes seem not to bad because you are still at the stage where kissing and making up is a thrill. Wind forward a few years and it will be a mass of seething ressentiment and sulking.