I was one of those people that originally balked at paying for a PS+ subscription, but I eventually came around to think it's actually good value compared to a lot of other things out there that are subscription services.
And it's not as if Sony are consistently upping the price every year, it's been pretty stable since it came into being.

Sony have PS+ subscriptions discounted by 20-25% at least twice a year [A 1 year subscription is always the best value], usually around June/July and I again at some other time,that's when I buy it, you just need to watch out for it, I usually keep my subscription two years ahead, which it the max I think they cap it at, so you are covered for any price rises over that period if they do occur.
I mean if you look at it as what else can you get for under $50 a year now days, the argument for not getting it does seem rather petty.

When you consider you get at least 24 free games a year, plus discounts at the PStore, and get to use the online services, plus cloud storage to backup your games, it's not a bad deal.
You don't even need to download the free games straight away, you can just select to add to library and that game will be perpetually linked to you PS+ account and you can download them whenever you want, as long as your subscription is kept active.
And I think even if you do let your subscription lapse at any stage, as long as you are using the same PSN ID and resubscribe, everything linked to your account is reinstated.
Also I think you should be able to get the free PS+ PS5 games as well [won't know till I try on Nov 3rd when the games are made available], even if you don't own a PS5 yet, just press add to library and you'll have it available when you do get a PS5.

Free PS4 games for November will be Middle-earth: Shadow of War [reviewed at 8/10] and Hollow Knight [reviewed at 9/10], and that's the thing with these free games, you can get games that you would otherwise never consider,[ which happens to be the case with those two games] and on playing them find they are really good, that's happened on so many occasions to me over the years I've lost count, actually Farcry 3 given away on the PS3 is a case in point, I ended up loving it and it's sort of perverse humour and have got every Farcry game since.
And it's not as if Sony are only giving you 24 crap games over the year, then the argument against getting it would be valid, you'll find you get at LEAST half a dozen that will more than cover the cost of the subscription several times over were you to actually purchase those games.

The problem is, especially for we AG racing fans is, people NOT getting a PS+ subscription now leaves a lot of games without a solid player base, or at least one that is not as active as when playing online was free.....Omega pack is a prime example
So it's ends up to your own benefit to get a PS+ subscription, and to recommend others to get one as well if you want the same sort of online activity that we had with WOHD, which was the golden era for Wipeout fans.

So don't be cheapskates, for the same price of a bottle of wine and a couple of pizzas you can get a yearly PS+ subscription, which is far better value IMHO.