I haven't voted as of course it is reasonable if that is what you want, but it isn't a 'generalised' thing.
I think friends are really important.
I also have really good friends that I can go for months without speaking to - part of what quantifies those friendships are the fact when you do speak / meet up, then you just pick up like you saw them yesterday. I think that is how you know how solid your relationship is, rather than one which was 'of it's time' and has now drifted.
I always say on these threads that people have really different ideas of what a friendship is.
Over the years I have friends who are sort of 'friends of that time' - I recall one friend I used to commute with, so, apart from our time at work, we'd have over an hour every day traveling home, and knew the ins and outs of everything that was happening in each others lives at that time, but, when I left that job, we were only ever in touch once or twice - it was the circumstance rather than a particular kinship. OTOH, like OP, I have some friends I've been friends with for over 45 years, where the friendships have endured months of no contact, and on occasion we've not physically met for a couple of years.
I've never liked the term 'best friend' as I think, by implication it sort of implies other friends are somehow "lesser", which isn't the case for me. I have friendships that are different from one another, and of course some of my friends are closer than others, but there is no single person I would say was my "best" friend.
I actually think the opposite of you OP. I think that with more working from home, and now I'm older and no longer chat to people on school run / at swimming lessons / at cubs / etc., it becomes even more important to nurture friendships of your own, rather than friendships of circumstance.