A new report calling for safe standing areas at football grounds in England and Wales has been launched by the Football Supporters' Federation.
Standing areas were outlawed after the Hillsborough disaster in 1989 when 96 Liverpool fans died in a crush.
FSF head of development Steven Powell said the report had a "well-argued case" for a return to standing.
But the Hillsborough Families Support Group described the call as a "step backwards" for supporters.
A poll of 2,100 fans by the Football Fans Census in March found that 92% of those supporters surveyed wanted clubs to bring back standing areas.
The idea also has the backing of former Sports Minister Kate Hoey, who has said a rational reappraisal of this issue is overdue.
WTF, this is in no way acceptable, every league governed by UEFA has been changing to all-seater stadiums over the last 15 years, and safety is now paramount, the stadiums have never been safer. Yet people want to see a return to the bad old days!
Somethings are just downright stupid and this is one of them. You dont need terraces to have an awsome atmosphere, you dont even need the biggest stadium - Anfield is widely regarded as having the best atmosphere in Europe on European nights, it is all-seater and only holds 45,400 spectators - the key to it is the supporters, not the way the stadium is built.
I for one hope we never go back to how things were in the 70's and 80's. BBC Sport Report