Knowing his character, it's likely he didn't grow to 'like' it.
Although occasionally Harry has attempted to use "worse" spells, Harry's general style of dueling and fighting tends to be nonlethal and causing minimal harm like Stupefy or Expelliarmus, including against opponents like Death Eaters and the Dark Lord himself. Even at the height of the wizarding war, when Harry understands how serious the situation is and is at his most mature during the series, he still largely avoided using any spells that actually cause harm.
“Hagrid swerved, but the Death Eaters were keeping up with the bike; more curses shot after them, and Harry had to sink low into the sidecar to avoid them. Wriggling round, he cried, ‘Stupefy!’ and a red bolt of light shot from his own wand, cleaving a gap between the four pursuing Death Eaters as they scattered to avoid it.” - Harry Potter and the Deathly Hallows, Chapter 4 (The Seven Potters)
Expelliarmus is considered Harry's signature spell since he often uses it in battle, so much so that Lupin warns him, and he's discovered by the Death Eaters when he used it despite that warning.
“I saw Stan Shunpike … you know, the bloke who was the conductor on the Knight Bus? And I tried to Disarm him instead of – well, he doesn’t know what he’s doing, does he? He must be Imperiused!’
Lupin looked aghast.
‘Harry, the time for Disarming is past! These people are trying to capture and kill you! At least Stun if you aren’t prepared to kill!” - Harry Potter and the Deathly Hallows, Chapter 5 (Fallen Warrior)
Lupin is shocked at Harry's insistence on using nonharmful spells.
“Yes, Harry,’ said Lupin with painful restraint, ‘and a great number of Death Eaters witnessed that happening! Forgive me, but it was a very unusual move then, under imminent threat of death. Repeating it tonight in front of Death Eaters who either witnessed or heard about the first occasion was close to suicidal!” - Harry Potter and the Deathly Hallows, Chapter 5 (Fallen Warrior)
However, Harry remains strongly morally opposed to using harmful spells, as says so when Lupin suggests the time for them is past.
“I won’t blast people out of my way just because they’re there,’ said Harry. ‘That’s Voldemort’s job.” - Harry Potter and the Deathly Hallows, Chapter 5 (Fallen Warrior)
Each time he goes up against the Dark Lord, his go-to spell is Expelliarmus, which simply removes the opponent's wand from their hand.
After using it on Snape, that was the last time we saw him use it - though he used both Crucio and Imperio.
Once he finds out Snape invented Sectumsempra, Harry never attempted to use it again throughout the series. That may be because he associated it with Snape from then on, who he hated for killing Dumbledore.
After the series, he may have used it out of necessity, but it's unlikely he'd ever grow to like it.
It's entirely possible that, especially after his opinion of Snape changed, he may have used the spell out of necessity, like he did with Crucio and Imperio. However, he would almost certainly never grow to like it since he's shown a clear moral objection to any spell that does harm. In addition, Sectumsempra, when used against a person, can cause more lasting damage to them than either Crucio and Imperio, unless the specific countercurse is used. So, Harry might consider it worse to use Sectumsempra, especially as almost no one knows the countercurse.