For god's sake, simply go for a fret job, or a refret if necessary! Please do not go changing necks every time simply because the frets are worn. Frets are supposed to be repaired or replaced eventually.
IMO, the "soul" of the guitar is its neck, so change the neck = change the guitar. It is amazing how a very subtle change in any neck characteristic can make all the difference of the world while playing. If you go for a neck change without trying the new neck before, it will be nearly impossible to predict how your "new guitar" will sound or feel. And even if you try, there are no guarantees that the new neck will behave the same way in your current guitar body.
And yes, I know that a refret or even a fret job can also change the feel of the guitar - bit this is much more subtle and in no way comparable to a complete neck change. There are way, way more variables in a neck replacement than in a refret.
If you do not like the idea of repairing or refretting often (or ever), think about going for stainless steel frets. I use them in my strat and love them, they feel "smoother", "faster", with the advantage that they are extremely resistant and may never need repair or replacement in your lifetime. I am never going back to traditional frets again.
Just please, if tou like your guitar, do not change the neck just because of fret worn. You will pay a lot of money and may end up with a "new guitar" that you may not like at all.
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Last edited: Jan 15, 2020