This applies to the Enterprise-D, the NX-01 Enterprise, and given that it is a feature ship, Defiant on DS9.
The Enterprise-D was the strongest ship in StarFleet.
The Defiant was one of the "heaviest armed ships in the quadrant"
and NX-01 was the most advanced Earth ship.
So why have these three ships always been pounded nearly to scrap in their respective series?
Some have said that "it would not be dramatic if your starship was near invincible"
I disagree.
Look at the original series.
Enterprise
1) Withstood attacks from the monstrous planet killer in "The Doomsday Machine"
2) Defeated a Romulan warship that featured two brand new weapons & tactical systems in "Balance of Terror".
3) Withstood more than 30 direct hits from TEN Romulan warships with little damage "The Deadly Years".
4) Endured internal sabotage and repeated direct hits from a Klingon cruiser with little damage "Elaan of Troyius"
5) Withstood attacks by a very tough Gorn ship while suffering little damage "Arena"
6) Withstood attacks by a specially equipped Orion suicide ship said to be "more powerful than any ship possibly could be" by Spock and subsequently destroyed the Orion in "Journey to Babel".
7) Shrugges off multiple direct hits fired by a Klingon warship. Subsequently destroyed the Klingon ship while suffering litte damage "Errand of Mercy".
Absorbed FOUR energy bolt hits equivalent to NINETY photon torpedos and survived "The Changeling".
9) Withstood substantial ground fire from surface installations "Return of the Archons" & "A Taste of Armageddon"
If writers in the original series were able to handle having a starship dang near indestructible.........then why have later writers had to make the Enterpris and other laad ships be weak and vulnerable?
Enterprise-D gets taken down by old Klingon Birds of Prey.
Voyager gets seized by the primitive Kazon.
Defiant in one episode mows down half a dozen Jem'hadar ships. Next time they get captured by just one.
It does not make sense.
The Enterprise-D was the strongest ship in StarFleet.
The Defiant was one of the "heaviest armed ships in the quadrant"
and NX-01 was the most advanced Earth ship.
So why have these three ships always been pounded nearly to scrap in their respective series?
Some have said that "it would not be dramatic if your starship was near invincible"
I disagree.
Look at the original series.
Enterprise
1) Withstood attacks from the monstrous planet killer in "The Doomsday Machine"
2) Defeated a Romulan warship that featured two brand new weapons & tactical systems in "Balance of Terror".
3) Withstood more than 30 direct hits from TEN Romulan warships with little damage "The Deadly Years".
4) Endured internal sabotage and repeated direct hits from a Klingon cruiser with little damage "Elaan of Troyius"
5) Withstood attacks by a very tough Gorn ship while suffering little damage "Arena"
6) Withstood attacks by a specially equipped Orion suicide ship said to be "more powerful than any ship possibly could be" by Spock and subsequently destroyed the Orion in "Journey to Babel".
7) Shrugges off multiple direct hits fired by a Klingon warship. Subsequently destroyed the Klingon ship while suffering litte damage "Errand of Mercy".

9) Withstood substantial ground fire from surface installations "Return of the Archons" & "A Taste of Armageddon"
If writers in the original series were able to handle having a starship dang near indestructible.........then why have later writers had to make the Enterpris and other laad ships be weak and vulnerable?
Enterprise-D gets taken down by old Klingon Birds of Prey.
Voyager gets seized by the primitive Kazon.
Defiant in one episode mows down half a dozen Jem'hadar ships. Next time they get captured by just one.
It does not make sense.