The strength of a suit is nearly never the deciding factor. In a reasonable contract the nasty distribution of the opps might bring us down, the 4-1 breaks and the unfavourable position of the high cards. Mostly the side high cards were more significant than the trump high cards. I remember a nice 7-1 fit with 10xxxxxx made 4 ♥, while the opps complained about the injustice. But I dont agree. In my youth barraging with KQ10xxx and a side king my partner had AJxx with a flat hand without side tricks and he was so proud like me desperate : "What do you think, what would happen, if the opps had this cards?" "They would run in a slam", I anwered. A and Jack in the right side suit together with 2 smalll trumps would have suited me much better. Bidding 1 ♠ with this hand lets the bidding fluent. P can assume otherwise, that your 1NT bid denies 4 ♠. The trust in the bidding is from great value. The prize that P attacks sometimes with the King from ♠Kx I pay. Dont forget that you have to make a non-perfect bid because the hand is non-perfect. You have to pay sometimes whatever you do.