Hi Prando,
That is a shame, the island is not as big as Jersey however, it is not as commercialised so is enjoyed by thousands who visit annually. It was voted the best cruise stop off (I believe in Europe) a couple of years ago. We get many (80 to 90) cruise ships visit annually (well we did until Corona Virus) whereas our near neighbours get very few, I think that is because Jersey it is more like a mini England and so more commercialised than Guernsey. That said we do, me and the other half, go across the water at least once a year for a nose around.
The other thing Guernsey has that Jersey does not, is the Bailiwick of Guernsey constists of a number of islands, Herm, Alderney, Sark and Jethou, so it can make for a far more interesting visit than our sister island. Of course Guernsey is not for everyone, but if you like Devon and Cornwall the south coast of Guernsey is remarkably similar to that part of the UK, so Mick, your comments somewhat surprise me, but perhaps you like the busier places, so I see Jersey might be a preference. As I say I actually quite like Jersey myself.
They built a new airport terminal here around 2006, so it might have been you were held up in the old one, which to be honest, having worked for a number of years in both, (I am saying no more than that) I actually preferred the atmosphere of the old terminal, but it was dated and not conducive to a comfortable stay if you were fogbound.
Fog can be an issue here, but our own airline now has fog busting equipped aircraft so they land using a visual simulator, (don’t ask as I know nothing more than I would not want to be on a plane being flown that way

) so apparently fog delays will be greatly lessoned. We do have very few international flights from here, Jersey has more, though most locals go to the UK for onward travel. That in itself can increase the price of a holiday, given the cost of travel off the island and a overstay in and outbound of the UK.