Chris Wilder said he had mixed emotions following Saturday's loss to Norwich City at Bramall Lane.
The Blades boss was visibly disappointed following a first league loss at home since January, but brimming with pride following another committed, spirited and whole-hearted display from his players.
On the reversal against Daniel Farke's Canaries, Wilder remarked: "It was very frustrating afternoon for everyone connected with the club and it's disappointing.
"It's mixed emotions really though, we don't like getting beat and we had a proud record here.
"But what I said to the players when I came here is too many clubs have just walked into Bramall Lane and had an easy ride.
"For too long teams have come here, enjoyed the stadium, the fans, the atmosphere and the pitch and seen a team that didn't show up, didn't show bottle, didn't show fight and didn't show guts.
"So I was determined to and we have done since day one, we've added those qualities throughout the squad, we've made sure we produce and we've gone at it and gone at it right to the death.
"Things have gone against us, decisions have gone against us, the bounce of the ball hasn't favoured us, we had five strikers out and Ched, who at best is 60% fit."
The manager added: "But we kept going and going and that will do for me, we never once gave it up.
"I'm told the players got a first-class reception from the supporters and they recognise these lads put the lot into this club and I'm proud of the players and I, like the supporters, will take a team like that all-day long."